United States congressional delegations from Pennsylvania

These are tables of congressional delegations from Pennsylvania to the United States House of Representatives and the United States Senate.

Pennsylvania's congressional districts since 2018

House of Representatives

Current members

List of members, their terms in office, district boundaries, and the district political ratings according to the CPVI. The delegation has 18 members, with 9 Republicans and 9 Democrats.

District	Representative (Hometown)	Party	Time in office	CPVI	District map
1st	Brian Fitzpatrick (Bucks County)	Republican	since January 3, 2017	R+1
2nd	Brendan Boyle (Philadelphia)	Democratic	since January 3, 2015	D+25
3rd	Dwight Evans (Philadelphia)	Democratic	since November 14, 2016	D+41
4th	Madeleine Dean (Abington Township)	Democratic	since January 3, 2019	D+7
5th	Mary Gay Scanlon (Swarthmore)	Democratic	since November 13, 2018	D+13
6th	Chrissy Houlahan (Devon)	Democratic	since January 3, 2019	D+2
7th	Susan Wild (South Whitehall Township)	Democratic	since November 6, 2018	D+1
8th	Matt Cartwright (Moosic)	Democratic	since January 3, 2013	R+1
9th	Dan Meuser (Dallas)	Republican	since January 3, 2019	R+14
10th	Scott Perry (Dillsburg)	Republican	since January 3, 2013	R+6
11th	Lloyd Smucker (West Lampeter Township)	Republican	since January 3, 2017	R+14
12th	Fred Keller (Middlecreek Township)	Republican	since May 21, 2019	R+17
13th	John Joyce (Altoona)	Republican	since January 3, 2019	R+22
14th	Guy Reschenthaler (Peters Township)	Republican	since January 3, 2019	R+14
15th	Glenn Thompson (Oil City)	Republican	since January 3, 2009	R+20
16th	Mike Kelly (Butler)	Republican	since January 3, 2011	R+8
17th	Conor Lamb (Mt. Lebanon)	Democratic	since March 13, 2018	R+3
18th	Mike Doyle (Forest Hills)	Democratic	since January 3, 1995	D+13

1789–1793: 8 seats

For the first two Congresses, Pennsylvania had eight seats. In the First Congress, Representatives were selected At-large on a general ticket. Districts were used in the Second Congress.

Cong ress	State-wide at-large on a General ticket								Cong ress
1st (1789–1791)	Thomas Fitzsimons (Pro-Admin)	Frederick Muhlenberg (Pro-Admin)	George Clymer (Pro-Admin)	Daniel Hiester (Anti-Admin)	Thomas Scott (Pro-Admin)	Peter Muhlenberg (Anti-Admin)	Thomas Hartley (Pro-Admin)	Henry Wynkoop (Pro-Admin)	1st (1789–1791)
	District
	1st	2nd	3rd	4th	5th	6th	7th	8th
2nd (1791–1793)	Thomas Fitzsimons (Pro-Admin)	Frederick Muhlenberg (Anti-Admin)	Israel Jacobs (Pro-Admin)	Daniel Hiester (Anti-Admin)	John W. Kittera (Pro-Admin)	Andrew Gregg (Anti-Admin)	Thomas Hartley (Pro-Admin)	William Findley (Anti-Admin)	2nd (1791–1793)

1793–1803: 13 seats

Pennsylvania had thirteen seats. For the third Congress representatives were selected at-large on a general ticket. After that, districts were created.

Cong ress	State-wide at-large on a General ticket														Cong ress
3rd (1793–1795)	William Montgomery (Anti-Admin)	Frederick Muhlenberg (Anti-Admin)	Thomas Fitzsimons (Pro-Admin)	Thomas Scott (Pro-Admin)	James Armstrong (Pro-Admin)	Daniel Hiester (Anti-Admin)	John Smilie (Anti-Admin)	John W. Kittera (Pro-Admin)	Thomas Hartley (Pro-Admin)	Andrew Gregg (Anti-Admin)		Peter Muhlenberg (Anti-Admin)	William Findley (Anti-Admin)	William Irvine (Anti-Admin)	3rd (1793–1795)
	District											District
	1st	2nd	3rd	4th (2 seats on a general ticket)		5th	6th	7th	8th	9th		10th	11th	12th
4th (1795–1797)	John Swanwick (D-R)	Frederick Muhlenberg (D-R)	Richard Thomas (F)	Samuel Sitgreaves (F)	John Richards (DR)	Daniel Hiester (D-R)	Samuel Maclay (D-R)	John W. Kittera (F)	Thomas Hartley (F)	Andrew Gregg (D-R)		David Bard (D-R)	William Findley (D-R)	Albert Gallatin (D-R)	4th (1795–1797)
						George Ege (F)
5th (1797–1799)		Blair McClenachan (D-R)		John Chapman (F)	Robert Brown (D-R)		John Andre Hanna (D-R)								5th (1797–1799)
	Robert Waln (F)					Joseph Hiester (D-R)
6th (1799–1801)		Michael Leib (D-R)		Peter G. Muhlenberg (D-R)								Henry Woods (F)	John Smilie (D-R)		6th (1799–1801)
7th (1801–1803)	William Jones (D-R)		Joseph Hemphill (F)	Isaac Van Horne (D-R)				Thomas Boude (F)	John Stewart (D-R)					William Hoge (D-R)	7th (1801–1803)

1803–1813: 18 seats

There were eighteen seats, apportioned among eleven districts. Districts 1–3 each had three seats elected on a general ticket. District 4 had two such seats. Districts 5–11 each had one seat.

Cong ress	District											District								Cong ress
	1st (3 seats on a general ticket)			2nd (3 seats on a general ticket)			3rd (3 seats on a general ticket)			4th (2 seats on a general ticket)			5th	6th	7th	8th	9th	10th	11th
8th (1803–1805)	Joseph Clay (D-R)	Jacob Richards (D-R)	Michael Leib (D-R)	Robert Brown (D-R)	Frederick Conrad (D-R)	Isaac Van Horne (D-R)	Isaac Anderson (D-R)	Joseph Hiester (D-R)	John Whitehill (D-R)	John Andre Hanna (D-R)		David Bard (D-R)	Andrew Gregg (D-R)	John Stewart (D-R)	John Rea (D-R)	William Findley (D-R)	John Smilie (D-R)	William Hoge (D-R)	John Baptiste Charles Lucas (D-R)	8th (1803–1805)
																		John Hoge (D-R)
9th (1805–1807)						John Pugh (D-R)		Christian Lower (D-R)						James Kelly (F)				John Hamilton (D-R)	Samuel Smith (D-R)	9th (1805–1807)
			John Porter (D-R)							Robert Whitehill (D-R)
10th (1807–1809)					William Milnor (F)		Robert Jenkins (F)	Matthias Richards (D-R)	John Hiester (D-R)				Daniel Montgomery Jr. (D-R)					William Hoge (D-R)		10th (1807–1809)
	Benjamin Say (D-R)
11th (1809–1811)		William Anderson (D-R)				John Ross (D-R)			Daniel Hiester (D-R)				George Smith (D-R)	William Crawford (D-R)				Aaron Lyle (D-R)		11th (1809–1811)
	Adam Seybert (D-R)
12th (1811–1813)			James Milnor (F)		Jonathan Roberts (D-R)	William Rodman (D-R)	Roger Davis (D-R)	John M. Hyneman (D-R)	Joseph Lefever (D-R)						William Piper (D-R)				Abner Lacock (D-R)	12th (1811–1813)
																	Isaac Griffin (D-R)

1813–1823: 23 seats

There were 15 districts. The 1st district had four seats elected on a general ticket. The 2nd, 3rd, 5th, 6th and 10th each had two seats elected on a general ticket. The rest of the districts each had one seat.

Cong ress	District											District											District			Cong ress
	1st				2nd		3rd		4th	5th			6th		7th	8th	9th	10th		11th	12th		13th	14th	15th
	4 seats				2 seats		2 seats			2 seats			2 seats					2 seats
13th (1813–1815)	Adam Seybert (D-R)	John Conard (D-R)	William Anderson (D-R)	Charles J. Ingersoll (D-R)	Jonathan Roberts (D-R)	Roger Davis (D-R)	John Gloninger (F)	James Whitehill (D-R)	Hugh Glasgow (D-R)	William Crawford (D-R)		Robert Whitehill (D-R)	Samuel D. Ingham (D-R)	Robert Brown (D-R)	John M. Hyneman (D-R)	William Piper (D-R)	David Bard (D-R)	Jared Irwin (D-R)	Isaac Smith (D-R)	William Findley (D-R)	Aaron Lyle (D-R)		Isaac Griffin (D-R)	Adamson Tannehill (D-R)	Thomas Wilson (D-R)	13th (1813–1815)
					Samuel Henderson (F)		Edward Crouch (D-R)	Amos Slaymaker (F)				John Rea (D-R)			Daniel Udree (D-R)
14th (1815–1817)	Joseph Hopkinson (F)	William Milnor (F)	Thomas Smith (F)	Jonathan Williams (D-R)	William Darlington (D-R)	John Hahn (D-R)	John Whiteside (D-R)	James M. Wallace (D-R)				William Maclay (D-R)		John Ross (D-R)	Joseph Hiester (D-R)		Thomas Burnside (D-R)		William Wilson (D-R)					John Woods (F)		14th (1815–1817)
				John Sergeant (F)													William Plunkett Maclay (D-R)
15th (1817–1819)		Adam Seybert (D-R)	William Anderson (D-R)		Isaac Darlington (F)	Levi Pawling (F)			Jacob Spangler (D-R)	Andrew Boden (D-R)						Alexander Ogle (D-R)		David Scott (D-R)		David Marchand (D-R)	Thomas Patterson (D-R)		Christian Tarr (D-R)	Henry Baldwin (D-R)	Robert Moore (D-R)	15th (1817–1819)
									Jacob Hostetter (D-R)				Samuel Moore (D-R)	Thomas Jones Rogers (D-R)				John Murray (D-R)
16th (1819–1821)	Samuel Edwards (F)	Thomas Forrest (F)	Joseph Hemphill (F)		William Darlington (D-R)	Samuel Gross (D-R)	Jacob Hibshman (D-R)					David Fullerton (D-R)				Robert Philson (D-R)			George Denison (D-R)							16th (1819–1821)
												Thomas Grubb McCullough (F)			Daniel Udree (D-R)
17th (1821–1823)		William Milnor (F)					James Buchanan (F)	John Phillips (F)	James S. Mitchell (D-R)	James Duncan (D-R)		James McSherry (F)			Ludwig Worman (F)	John Tod (D-R)	John Brown (D-R)	William Cox Ellis (D-R)		George Plumer (D-R)			Andrew Stewart (D-R)		Patrick Farrelly (D-R)	17th (1821–1823)
		Thomas Forrest (F)								John Findlay (D-R)			Samuel D. Ingham (D-R)		Daniel Udree (D-R)			Thomas Murray Jr. (D-R)						Walter Forward (D-R)

1823–1833: 26 seats

Cong ress	District											District											District						Cong ress
	1st	2nd	3rd	4th			5th	6th	7th			8th		9th			10th	11th		12th	13th		14th	15th	16th		17th	18th
				3 seats					2 seats			2 seats		3 seats				2 seats							2 seats
18th (1823–1825)	Samuel Breck (Adams F)	Joseph Hemphill (Jackson F)	Daniel H. Miller (Jackson D-R)	James Buchanan (Jackson F)	Samuel Edwards (Jackson F)	Isaac Wayne (Jackson F)	Philip Swenk Markley (Jackson D-R)	Robert Harris (Jackson D-R)	Daniel Udree (Jackson D-R)	Henry Wilson (Jackson D-R)		Samuel D. Ingham (Jackson D-R)	Thomas Rogers (Jackson D-R)	William Cox Ellis (Jackson F)	George Kremer (Jackson D-R)	Samuel McKean (Jackson D-R)	James S. Mitchell (Jackson D-R)	John Findlay (Jackson D-R)	James Wilson (Jackson D-R)	John Brown (Jackson D-R)	John Tod (Jackson D-R)		Andrew Stewart (Jackson D-R)	Thomas Patterson (Jackson D-R)	Walter Forward (Jackson D-R)	James Allison Jr. (Jackson D-R)	George Plumer (Jackson D-R)	Patrick Farrelly (Jackson D-R)	18th (1823–1825)
													George Wolf (Jackson D-R)								Alexander Thomson (Jackson D-R)
19th (1825–1827)	John Wurts (J)	Joseph Hemphill (J)	Daniel H. Miller (J)	James Buchanan (J)	Samuel Edwards (J)	Charles Miner (J)	Philip Swenk Markley (Anti-J)	Robert Harris (J)	William Addams (J)	Henry Wilson (J)		Samuel D. Ingham (J)	George Wolf (J)	Espy Van Horne (J)	George Kremer (J)	Samuel McKean (J)	James S. Mitchell (J)	John Findlay (J)	James Wilson (Anti-J)	John Mitchell (J)	Alexander Thomson (J)		Andrew Stewart (J)	Joseph Lawrence (Anti-J)	James S. Stevenson (J)	Robert Orr Jr. (J)	George Plumer (J)	Patrick Farrelly (J)	19th (1825–1827)
		Thomas Kittera (Anti-J)								Jacob Krebs (J)											Chauncey Forward (J)							Thomas Hale Sill (Anti-J)
20th (1827–1829)	Joel B. Sutherland (J)	John Sergeant (Anti-J)			Samuel Anderson (J)		John Benton Sterigere (J)	Innis Green (J)		Joseph Fry Jr. (J)							Adam King (J)	William Ramsey (J)	James Wilson (J)								Richard Coulter (J)	Stephen Barlow (J)	20th (1827–1829)
21st (1829–1831)		Joseph Hemphill (J)			Joshua Evans Jr. (J)	George G. Leiper (J)			Henry A. P. Muhlenberg (J)			Samuel A. Smith (J)	Peter Ihrie Jr. (J)	James Ford (J)	Alem Marr (J)	Philander Stephens (J)			Thomas Hartley Crawford (J)	John Scott (J)			Thomas Irwin (J)	William McCreery (J)	Harmar Denny (Anti-M)	John Gilmore (J)		Thomas Hale Sill (Anti-J)	21st (1829–1831)
22nd (1831–1833)		Henry Horn (J)	John G. Watmough (Anti-J)	William Muhlenberg Hiester (Anti-M)	David Potts Jr. (Anti-M)	Joshua Evans Jr. (J)	Joel K. Mann (J)	John C. Bucher (J)		Henry King (J)					Lewis Dewart (J)					Robert Allison (Anti-M)	George Burd (Anti-J)		Andrew Stewart (Anti-M)	Thomas M. T. McKennan (Anti-M)				John Banks (Anti-M)	22nd (1831–1833)
																		Robert McCoy (J)

1833–1843: 28 seats

Following the 1830 census, Pennsylvania was apportioned 28 seats. The commonwealth divided them into 25 districts and two districts, the 2nd and the 4th, had two and three seats respectively.

Congress	District											District											District
	1st	2nd		3rd	4th			5th	6th	7th		8th	9th	10th	11th	12th	13th	14th	15th	16th	17th		18th	19th	20th	21st	22nd	23rd	24th	25th
		2 seats			3 seats
23rd (1833–1835)	Joel Barlow Sutherland (J)	Horace Binney (Anti-J)	James Harper (Anti-J)	John G. Watmough (Anti-J)	David Potts Jr. (Anti-M)	Edward Darlington (Anti-M)	William Muhlenberg Hiester (Anti-M)	Joel K. Mann (J)	Robert Ramsey (J)	David D. Wagener (J)		Henry King (J)	Henry A. P. Muhlenberg (J)	William Clark (Anti-M)	Charles Augustus Barnitz (Anti-M)	George Chambers (Anti-M)	Jesse Miller (J)	Joseph Henderson (J)	Andrew Beaumont (J)	Joseph Biles Anthony (J)	John Laporte (J)		George Burd (Anti-J)	Richard Coulter (J)	Andrew Stewart (Anti-M)	Thomas M. T. McKennan (Anti-M)	Harmar Denny (Anti-M)	Samuel Smith Harrison (J)	John Banks (Anti-M)	John Galbraith (J)
24th (1835–1837)		Joseph R. Ingersoll (Anti-J)		Michael W. Ash (J)				Jacob Fry Jr. (J)	Mathias Morris (Anti-J)			Edward Burd Hubley (J)			Henry Logan (J)								Job Mann (J)	John Klingensmith Jr. (J)	Andrew Buchanan (J)
																	James Black (J)												John James Pearson (Anti-J)
25th (1837–1839)	Lemuel Paynter (D)	John Sergeant (W)	George Washington Toland (W)	Francis J. Harper (D)			Edward Davies (Anti-M)	Jacob Fry Jr. (D)	Mathias Morris (W)	David D. Wagener (D)		Edward Burd Hubley (D)	Henry A. P. Muhlenberg (D)	Luther Reily (D)	Henry Logan (D)	Daniel Sheffer (D)	Charles McClure (D)	William Wilson Potter (D)	David Petrikin (D)	Robert Hanna Hammond (D)	Samuel Wells Morris (D)		Charles Ogle (Anti-M)	John Klingensmith Jr. (D)	Andrew Buchanan (D)		Richard Biddle (Anti-M)	William Beatty (D)	Thomas Henry (Anti-M)	Arnold Plumer (D)
				Charles Naylor (W)									George M. Keim (D)
26th (1839–1841)					Francis James (Anti-M)	John Edwards (Anti-M)		Joseph Fornance (D)	John Davis (D)			Peter Newhard (D)		William Simonton (W)	James Gerry (D)	James Cooper (W)	William Sterrett Ramsey (D)	George McCulloch (D)						Albert Gallatin Marchand (D)	Enos Hook (D)	Isaac Leet (D)				John Galbraith (D)
																											Henry M. Brackenridge (W)
27th (1841–1843)	Charles Brown (D)	Joseph R. Ingersoll (W)		Charles J. Ingersoll (D)	Jeremiah Brown (W)	John Edwards (W)	Francis James (W)		Robert Ramsey (W)	John Westbrook (D)							Amos Gustine (D)	James Irvin (W)	Benjamin A. Bidlack (D)	John Snyder (D)	Davis Dimock Jr. (D)		Henry Black (W)		Henry White Beeson (D)	Joseph Lawrence (W)	William W. Irwin (W)	William Jack (D)	Thomas Henry (W)	Arnold Plumer (D)
																					Almon H. Read (D)		James McPherson Russell (W)			Thomas M. T. McKennan (W)

1843–1853: 24 seats

Congress	District											District											District
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th
28th (1843–1845)	Edward J. Morris (W)	Joseph R. Ingersoll (W)	John T. Smith (D)	Charles J. Ingersoll (D)	Jacob S. Yost (D)	Michael H. Jenks (W)	Abraham R. McIlvaine (W)	Jeremiah Brown (W)	John Ritter (D)	Richard Brodhead (D)		Benjamin A. Bidlack (D)	Almon H. Read (D)	Henry Frick (W)	Alexander Ramsey (W)	Henry Nes (Ind D)	James Black (D)	James Irvin (W)	Andrew Stewart (W)	Henry D. Foster (D)	John Dickey (W)		William Wilkins (D)	Samuel Hays (D)	Charles M. Reed (W)	Joseph Buffington (W)
													George Fuller (D)	James Pollock (W)									Cornelius Darragh (W)
29th (1845–1847)	Lewis C. Levin (K-N)		John H. Campbell (K-N)			Jacob Erdman (D)		John Strohm (W)				Owen D. Leib (D)	David Wilmot (D)			Moses McClean (D)		John Blanchard (W)			John Hoge Ewing (W)			William S. Garvin (D)	James Thompson (D)
30th (1847–1849)			Charles Brown (D)		John Freedley (W)	Westbrook Hornbeck (W)			William Strong (D)			Chester P. Butler (W)			George N. Eckert (W)	Henry Nes (W)	Jasper E. Brady (W)			Job Mann (D)	John Dickey (W)		Moses Hampton (W)	John W. Farrelly (W)		Alexander Irvin (W)
						Samuel A. Bridges (D)
31st (1849–1851)		Joseph R. Chandler (W)	Henry D. Moore (W)	John Robbins (D)		Thomas Ross (D)	Jesse C. Dickey (W)	Thaddeus Stevens (W)		Milo M. Dimmick (D)				Joseph Casey (W)	Charles W. Pitman (W)		James X. McLanahan (D)	Samuel Calvin (W)	Andrew J. Ogle (W)		Robert R. Reed (W)			John W. Howe (FS)		Alfred Gilmore (D)
												John Brisbin (D)				Joel B. Danner (D)
32nd (1851–1853)	Thomas B. Florence (D)				John McNair (D)		John A. Morrison (D)		J. Glancy Jones (D)			Henry M. Fuller (W)	Galusha A. Grow (D)	James Gamble (D)	Thomas M. Bibighaus (W)	William H. Kurtz (D)		Andrew Parker (D)	John L. Dawson (D)	Joseph H. Kuhns (W)	John Allison (W)		Thomas M. Howe (W)	John W. Howe (W)	Carlton B. Curtis (D)

1853–1863: 25 seats

Congress	District											District											District
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th
33rd (1853–1855)	Thomas B. Florence (D)	Joseph R. Chandler (W)	John Robbins (D)	William H. Witte (D)	John McNair (D)	William Everhart (W)	Samuel A. Bridges (D)	Henry A. Muhlenberg (D)	Isaac E. Hiester (W)	Ner Middleswarth (W)		Christian M. Straub (D)	Hendrick B. Wright (D)	Asa Packer (D)	Galusha A. Grow (D)	James Gamble (D)	Carlton B. Curtis (D)	Samuel L. Russell (W)	John McCulloch (W)	Augustus Drum (D)	John L. Dawson (D)		David Ritchie (W)	Thomas M. Howe (W)	Michael C. Trout (D)	John Dick (W)	William H. Kurtz (D)
								J. Glancy Jones (D)
34th (1855–1857)		Job R. Tyson (W)	William Millward (O)	Jacob Broom (K-N)	John Cadwalader (D)	John Hickman (D)	Samuel C. Bradshaw (O)		Anthony E. Roberts (Ind W)	John Christian Kunkel (W)		James H. Campbell (O)	Henry M. Fuller (O)			John J. Pearce (O)	Lemuel Todd (R)	David F. Robison (O)	John R. Edie (O)	John Covode (O)	Jonathan Knight (O)		David Ritchie (O)	Samuel A. Purviance (O)	John Allison (O)	David Barclay (D)	John Dick (O)
35th (1857–1859)		Edward J. Morris (R)	James Landy (D)	Henry M. Phillips (D)	Owen Jones (D)		Henry Chapman (D)		Anthony E. Roberts (R)	John Christian Kunkel (R)		William L. Dewart (D)	John G. Montgomery (D)	William H. Dimmick (D)	Galusha A. Grow (R)	Allison White (D)	John A. Ahl (D)	Wilson Reilly (D)	John R. Edie (R)	John Covode (R)	William Montgomery (D)		David Ritchie (R)	Samuel A. Purviance (R)	William Stewart (R)	James L. Gillis (D)	John Dick (R)
								William H. Keim (R)					Paul Leidy (D)
36th (1859–1861)			John P. Verree (R)	William Millward (R)	John Wood (R)	John Hickman (Anti-Lecompton D)	Henry C. Longnecker (R)	John Schwartz (Anti-Lecompton D)	Thaddeus Stevens (R)	John W. Killinger (R)		James H. Campbell (R)	George W. Scranton (R)			James T. Hale (R)	Benjamin F. Junkin (R)	Edward McPherson (R)	Samuel S. Blair (R)				James K. Moorhead (R)	Robert McKnight (R)		Chapin Hall (R)	Elijah Babbitt (R)
								Jacob K. McKenty (D)
37th (1861–1863)	William E. Lehman (D)			William D. Kelley (R)	William M. Davis (R)	John Hickman (R)	Thomas B. Cooper (D)	Sydenham E. Ancona (D)						Philip Johnson (D)			Joseph Bailey (D)				Jesse Lazear (D)				John W. Wallace (R)	John Patton (R)
		Charles J. Biddle (D)					John D. Stiles (D)						Hendrick B. Wright (D)

1863–1873: 24 seats

Congress	District											District											District
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th
38th (1863–1865)	Samuel J. Randall (D)	Charles O'Neill (R)	Leonard Myers (R)	William D. Kelley (R)	Martin R. Thayer (R)	John D. Stiles (D)	John M. Broomall (R)	Sydenham E. Ancona (D)	Thaddeus Stevens (R)	Myer Strouse (D)		Philip Johnson (D)	Charles Denison (D)	Henry W. Tracy (Ind R)	Wm H. Miller (D)	Joseph Bailey (D)	Alexander H. Coffroth (D)	Archibald McAllister (D)	James T. Hale (Ind R)	Glenni W. Scofield (R)	Amos Myers (R)		John L. Dawson (D)	James K. Moorhead (R)	Thomas Williams (R)	Jesse Lazear (D)
39th (1865–1867)						Benjamin M. Boyer (D)								Ulysses Mercur (R)	George F. Miller (R)	Adam J. Glossbrenner (D)		Abraham A. Barker (R)	Stephen F. Wilson (R)		Charles V. Culver (R)					George V.E. Lawrence (R)
																	William H. Koontz (R)
40th (1867–1869)					Caleb N. Taylor (R)			James L. Getz (D)		Henry L. Cake (R)		Daniel M. Van Auken (D)						Daniel J. Morrell (R)			Darwin A. Finney (R)		John Covode (R)
									Oliver J. Dickey (R)				George W. Woodward (D)								S. Newton Pettis (R)
41st (1869–1871)			John Moffet (D)		John R. Reading (D)	John D. Stiles (D)	Washington Townsend (R)								John B. Packer (R)	Richard J. Haldeman (D)	John Cessna (R)		William H. Armstrong (R)		Calvin W. Gilfillan (R)			James S. Negley (R)	Darwin Phelps (R)	Joseph B. Donley (R)
			Leonard Myers (R)		Caleb N. Taylor (R)
42nd (1871–1873)		John V. Creely (Ind R)			Alfred C. Harmer (R)	Ephraim L. Acker (D)				John W. Killinger (R)		John B. Storm (D)	Lazarus D. Shoemaker (R)				Benjamin F. Meyers (D)	Robert M. Speer (D)	Henry Sherwood (D)		Samuel Griffith (D)		Henry D. Foster (D)		Ebenezer McJunkin (R)	William McClelland (D)
														Frank C. Bunnell (R)

1873–1883: 27 seats

Congress	District											District											District				At-large
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	3 seats on a general ticket
43rd (1873–1875)	Samuel J. Randall (D)	Charles O'Neill (R)	Leonard Myers (R)	William D. Kelley (R)	Alfred C. Harmer (R)	James S. Biery (R)	Washington Townsend (R)	Hiester Clymer (D)	A. Herr Smith (R)	John W. Killinger (R)		John B. Storm (D)	Lazarus D. Shoemaker (R)	James D. Strawbridge (R)	John B. Packer (R)	John A. Magee (D)	John Cessna (R)	Robert M. Speer (D)	Sobieski Ross (R)	Carlton B. Curtis (R)	Hiram L. Richmond (R)		Alexander W. Taylor (R)	James S. Negley (R)	Ebenezer McJunkin (R)	William S. Moore (R)	Charles Albright (R)	Glenni W. Scofield (R)	Lemuel Todd (R)
																									John M. Thompson (R)		25th	26th	27th
44th (1875–1877)	Chapman Freeman (R)		Samuel J. Randall (D)		John Robbins (D)	Washington Townsend (R)	Alan Wood Jr. (R)			William Mutchler (D)		Francis D. Collins (D)	Winthrop W. Ketcham (R)	James B. Reilly (D)		Joseph Powell (D)	Sobieski Ross (R)	John Reilly (D)	William S. Stenger (D)	Levi Maish (D)	Levi A. Mackey (D)		Jacob Turney (D)	James H. Hopkins (D)	Alexander G. Cochran (D)	John W. Wallace (R)	George A. Jenks (D)	James Sheakley (D)	Albert G. Egbert (D)
													William H. Stanton (D)
45th (1877–1879)					Alfred C. Harmer (R)	William Ward (R)	Isaac N. Evans (R)			Samuel A. Bridges (D)			Hendrick B. Wright (D)		John W. Killinger (R)	Edward Overton Jr. (R)	John I. Mitchell (R)	Jacob M. Campbell (R)						Russell Errett (R)	Thomas M. Bayne (R)	William S. Shallenberger (R)	Harry White (R)	John M. Thompson (R)	Lewis F. Watson (R)
46th (1879–1881)	Henry H. Bingham (R)						William Godshalk (R)			Reuben K. Bachman (D)		Robert Klotz (D)	Hendrick B. Wright (GB)	John W. Ryon (D)				Alexander H. Coffroth (D)	Horatio G. Fisher (R)	Frank E. Beltzhoover (D)	Seth H. Yocum (GB)		Morgan R. Wise (D)					Samuel B. Dick (R)	James H. Osmer (R)
47th (1881–1883)								Daniel Ermentrout (D)		William Mutchler (D)			Joseph A. Scranton (R)	Charles N. Brumm (GB)	Samuel F. Barr (R)	Cornelius C. Jadwin (R)	Robert J.C. Walker (R)	Jacob M. Campbell (R)			Andrew G. Curtin (D)						James Mosgrove (GB)	Samuel H. Miller (R)	Lewis F. Watson (R)

1883–1893: 28 seats

Following the 1880 Census, the delegation grew by one seat. Until 1889, that seat was elected at-large statewide. After 1889, the state was redistricted into 28 districts.

Congress	District											District											District							At-large
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th
48th (1883–1885)	Henry H. Bingham (R)	Charles O'Neill (R)	Samuel J. Randall (D)	William D. Kelley (R)	Alfred C. Harmer (R)	James B. Everhart (R)	Isaac N. Evans (R)	Daniel Ermentrout (D)	A. Herr Smith (R)	William Mutchler (D)		John B. Storm (D)	Daniel W. Connolly (D)	Charles N. Brumm (GB)	Samuel F. Barr (R)	George A. Post (D)	William W. Brown (R)	Jacob M. Campbell (R)	Louis E. Atkinson (R)	William A. Duncan (D)	Andrew G. Curtin (D)		Charles E. Boyle (D)	James H. Hopkins (D)	Thomas M. Bayne (R)	George V.E. Lawrence (R)	John D. Patton (D)	Samuel H. Miller (R)	Samuel M. Brainerd (R)	Mortimer F. Elliott (D)
																				John A. Swope (D)
49th (1885–1887)									John A. Hiestand (R)	William H. Sowden (D)			Joseph A. Scranton (R)	Charles N. Brumm (R)	Franklin Bound (R)	Frank C. Bunnell (R)								James S. Negley (R)		Oscar L. Jackson (R)	Alexander C. White (R)	George W. Fleeger (R)	William L. Scott (D)	Edwin S. Osborne (R)
50th (1887–1889)						Smedley Darlington (R)	Robert M. Yardley (R)					Charles R. Buckalew (D)	John Lynch (D)				Henry C. McCormick (R)	Edward Scull (R)		Levi Maish (D)	John Patton (R)		Welty McCullogh (R)	John Dalzell (R)			James T. Maffett (R)	Norman Hall (D)
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th
51st (1889–1891)	Henry H. Bingham (R)	Charles O'Neill (R)	Samuel J. Randall (D)	William D. Kelley (R)	Alfred C. Harmer (R)	Smedley Darlington (R)	Robert M. Yardley (R)	William Mutchler (D)	David B. Brunner (D)	Marriott Brosius (R)		Joseph A. Scranton (R)	Edwin S. Osborne (R)	James B. Reilly (D)	John W. Rife (R)	Myron B. Wright (R)	Henry C. McCormick (R)	Charles R. Buckalew (D)	Louis E. Atkinson (R)	Levi Maish (D)	Edward Scull (R)		Samuel A. Craig (R)	John Dalzell (R)	Thomas M. Bayne (R)	Joseph W. Ray (R)	Charles C. Townsend (R)	William C. Culbertson (R)	Lewis F. Watson (R)	James Kerr (D)
			Richard Vaux (D)	John E. Reyburn (R)																									Charles W. Stone (R)
52nd (1891–1893)			William McAleer (D)			John B. Robinson (R)	Edwin Hallowell (D)					Lemuel Amerman (D)	George W. Shonk (R)				Albert C. Hopkins (R)	Simon P. Wolverton (D)		Frank E. Beltzhoover (D)			George F. Huff (R)		William A. Stone (R)	Andrew Stewart (R)	Eugene P. Gillespie (D)	Matthew Griswold (R)		George F. Kribbs (D)
																										Alexander K. Craig (D)
																										William A. Sipe (D)

1893–1903: 30 seats

Following the 1890 Census, the delegation grew by two seats. Those two additional seats were elected at-large across the entire commonwealth.

Congress	District											District											District								At-large	At-large
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th
53rd (1893–1895)	Henry H. Bingham (R)	Charles O'Neill (R)	William McAleer (Ind D)	John E. Reyburn (R)	Alfred C. Harmer (R)	John B. Robinson (R)	Irving P. Wanger (R)	William Mutchler (D)	Constantine J. Erdman (D)	Marriott Brosius (R)		Joseph A. Scranton (R)	William H. Hines (D)	James B. Reilly (D)	Ephraim M. Woomer (R)	Myron B. Wright (R)	Albert C. Hopkins (R)	Simon P. Wolverton (D)	Thaddeus M. Mahon (R)	Frank E. Beltzhoover (D)	Josiah D. Hicks (R)		Daniel B. Heiner (R)	John Dalzell (R)	William A. Stone (R)	William A. Sipe (D)	Thomas W. Phillips (R)	Joseph C. Sibley (D)	Charles W. Stone (R)	George F. Kribbs (D)	William Lilly (R)	Alexander McDowell (R)
		Robert Adams Jr. (R)						Howard Mutchler (D)								Edwin J. Jorden (R)															Galusha A. Grow (R)
54th (1895–1897)			Frederick Halterman (R)					Joseph J. Hart (D)					John Leisenring (R)	Charles N. Brumm (R)		James H. Codding (R)	Fred C. Leonard (R)	Monroe H. Kulp (R)		James A. Stahle (R)						Ernest F. Acheson (R)		Matthew Griswold (R)		William C. Arnold (R)		George F. Huff (R)
55th (1897–1899)			William McAleer (D)	James R. Young (R)		Thomas S. Butler (Ind R)		William S. Kirkpatrick (R)	Daniel Ermentrout (D)			William Connell (R)	Morgan B. Williams (R)		Marlin E. Olmsted (R)		Horace B. Packer (R)			George J. Benner (D)			Edward E. Robbins (R)				Joseph B. Showalter (R)	John C. Sturtevant (R)				Samuel A. Davenport (R)
																									William H. Graham (R)
56th (1899–1901)						Thomas S. Butler (R)		Laird H. Barber (D)					Stanley W. Davenport (D)	James W. Ryan (D)		Charles F. Wright (R)		Rufus K. Polk (D)		Edward D. Ziegler (D)	Joseph E. Thropp (R)		Summers M. Jack (R)					Athelston Gaston (D)	Joseph C. Sibley (D)	James K.P. Hall (D)
					Edward de Veaux Morrell (R)				Henry D. Green (D)
57th (1901–1903)			Henry Burk (R)					Howard Mutchler (D)					Henry W. Palmer (R)	George R. Patterson (R)			Elias Deemer (R)			Robert Jacob Lewis (R)	Alvin Evans (R)							Arthur L. Bates (R)	Joseph C. Sibley (R)			Robert H. Foerderer (R)
										Henry B. Cassel (R)								Alexander Billmeyer (D)

1903–1913: 32 seats

Following the 1900 Census, the delegation grew by two seats.

Congress	District											District											District											District
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd
58th (1903–1905)	Henry H. Bingham (R)	Robert Adams Jr. (R)	Henry Burk (R)	Robert H. Foerderer (R)	Edward de Veaux Morrell (R)	George D. McCreary (R)	Thomas S. Butler (R)	Irving P. Wanger (R)	Henry B. Cassel (R)	George Howell (D)		Henry W. Palmer (R)	George R. Patterson (R)	Marcus C.L. Kline (D)	Charles F. Wright (R)	Elias Deemer (R)	Charles H. Dickerman (D)	Thaddeus M. Mahon (R)	Marlin E. Olmsted (R)	Alvin Evans (R)	Daniel F. Lafean (R)		Solomon R. Dresser (R)	George F. Huff (R)	Allen F. Cooper (R)	Ernest F. Acheson (R)	Arthur L. Bates (R)	Joseph H. Shull (D)	William O. Smith (R)	Joseph C. Sibley (R)	George Shiras III (Ind R)	John Dalzell (R)		Henry K. Porter (Ind R)	James W. Brown (Ind R)
			George A. Castor (R)	Reuben O. Moon (R)						William Connell (R)
59th (1905–1907)										Thomas H. Dale (R)					Mial E. Lilley (R)		Edmund W. Samuel (R)			John M. Reynolds (R)								Gustav A. Schneebeli (R)			William H. Graham (R)			James F. Burke (R)	Andrew J. Barchfeld (R)
		John E. Reyburn (R)	J. Hampton Moore (R)										Charles N. Brumm (R)
60th (1907–1909)					William W. Foulkrod (R)					Thomas D. Nicholls (Ind D)		John T. Lenahan (D)		John H. Rothermel (D)	George W. Kipp (D)	William B. Wilson (D)	John G. McHenry (D)	Benjamin K. Focht (R)					Charles F. Barclay (R)					J. Davis Brodhead (D)	Joseph G. Beale (R)	Nelson P. Wheeler (R)
		Joel Cook (R)
61st (1909–1911)									William W. Griest (R)			Henry W. Palmer (R)	Alfred B. Garner (R)		Charles C. Pratt (R)											John K. Tener (R)		A. Mitchell Palmer (D)	J. N. Langham (R)
62nd (1911–1913)		William S. Reyburn (R)			Michael Donohoe (D)			Robert E. Difenderfer (D)		John R. Farr (R)		Charles C. Bowman (R)	Robert E. Lee (D)		George W. Kipp (D)					Jesse L. Hartman (R)			Charles E. Patton (R)	Curtis H. Gregg (D)	Thomas S. Crago (R)	Charles Matthews (R)				Peter M. Speer (R)	Stephen G. Porter (R)
	William S. Vare (R)														William D.B. Ainey (R)

1913–1933: 36 seats

Following the 1910 Census, the delegation grew by four seats to its largest size to date. The four new seats were elected at-large statewide. Starting in 1923, however, four new districts were added to replace the at-large seats.

Congress	District											District											District											District		At-large
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd	Seat A	Seat B	Seat C	Seat D
63rd (1913–1915)	William S. Vare (R)	George S. Graham (R)	J. Hampton Moore (R)	George W. Edmonds (R)	Michael Donohoe (D)	J. Washington Logue (D)	Thomas S. Butler (R)	Robert E. Difenderfer (D)	William W. Griest (R)	John R. Farr (R)		John J. Casey (D)	Robert E. Lee (D)	John H. Rothermel (D)	William D.B. Ainey (R)	Edgar R. Kiess (R)	John V. Lesher (D)	Franklin L. Dershem (D)	Aaron S. Kreider (R)	Warren W. Bailey (D)	Andrew R. Brodbeck (D)		Charles E. Patton (R)	Abraham L. Keister (R)	Wooda N. Carr (D)	Henry W. Temple (Prog)	Milton W. Shreve (R)	A. Mitchell Palmer (D)	J. N. Langham (R)	Willis J. Hulings (Prog)	Stephen G. Porter (R)	M. Clyde Kelly (R)		James F. Burke (R)	Andrew J. Barchfeld (R)	Fred E. Lewis (R)	John M. Morin (R)	Anderson H. Walters (R)	Arthur R. Rupley (R)
64th (1915–1917)					Peter E. Costello (R)	George P. Darrow (R)		Henry Winfield Watson (R)					Robert D. Heaton (R)	Arthur G. Dewalt (D)	Louis T. McFadden (R)			Benjamin K. Focht (R)			C. William Beales (R)		Charles H. Rowland (R)		Robert F. Hopwood (R)	Henry W. Temple (R)	Michael Liebel Jr. (D)	Henry J. Steele (D)	Solomon T. North (R)	Samuel H. Miller (R)		William H. Coleman (R)		John M. Morin (R)		John R.K. Scott (R)	Thomas S. Crago (R)	Daniel F. Lafean (R)	Mahlon M. Garland (R)
65th (1917–1919)												Thomas W. Templeton (R)								John M. Rose (R)	Andrew R. Brodbeck (D)			Edward E. Robbins (R)	Bruce F. Sterling (D)		Henry A. Clark (R)		Nathan L. Strong (R)	Orrin D. Bleakley (R)		M. Clyde Kelly (Prog)			Guy E. Campbell (D)			Joseph McLaughlin (R)
																														Earl H. Beshlin (D)
66th (1919–1921)										Patrick McLane (D)		John J. Casey (D)	John Reber (R)								Edward S. Brooks (R)		Evan J. Jones (R)	John H. Wilson (D)	Samuel A. Kendall (R)		Milton W. Shreve (R)			Willis J. Hulings (R)		M. Clyde Kelly (R)				William J. Burke (R)		Anderson H. Walters (R)
			Harry C. Ransley (R)							John R. Farr (R)
67th (1921–1923)					James J. Connolly (R)					Charles R. Connell (R)		Clarence D. Coughlin (R)		Fred B. Gernerd (R)			I. Clinton Kline (R)							Adam M. Wyant (R)			Milton W. Shreve (Ind R)	William H. Kirkpatrick (R)		Harris J. Bixler (R)							Joseph McLaughlin (R)		Thomas S. Crago (R)
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd	33rd	34th	35th	36th
68th (1923–1925)	William S. Vare (R)	George S. Graham (R)	Harry C. Ransley (R)	George W. Edmonds (R)	James J. Connolly (R)	George A. Welsh (R)	George P. Darrow (R)	Thomas S. Butler (R)	Henry Winfield Watson (R)	William W. Griest (R)		Laurence H. Watres (R)	John J. Casey (D)	George F. Brumm (R)	William M. Croll (D)	Louis T. McFadden (R)	Edgar R. Kiess (R)	Herbert W. Cummings (D)	Edward M. Beers (R)	Frank C. Sites (D)	George M. Wertz (R)		J. Banks Kurtz (R)	Samuel F. Glatfelter (D)	William I. Swoope (R)	Samuel A. Kendall (R)	Henry W. Temple (R)	Thomas W. Phillips Jr. (R)	Nathan L. Strong (R)	Harris J. Bixler (R)	Milton W. Shreve (R)	Everett Kent (D)		Adam M. Wyant (R)	Stephen G. Porter (R)	M. Clyde Kelly (R)	John M. Morin (R)	James M. Magee (R)	Guy E. Campbell (R)
69th (1925–1927)				Benjamin M. Golder (R)									Edmund N. Carpenter (R)		Charles J. Esterly (R)			Frederick W. Magrady (R)		Joshua W. Swartz (R)	Anderson H. Walters (R)			Franklin Menges (R)								William R. Coyle (R)
70th (1927–1929)	James M. Hazlett (R)												John J. Casey (D)	Cyrus M. Palmer (R)	Robert G. Bushong (R)					Isaac H. Doutrich (R)	J. Russell Leech (R)				J. Mitchell Chase (R)			J. Howard Swick (R)		Thomas C. Cochran (R)		Everett Kent (D)						Harry A. Estep (R)
	James M. Beck (R)							James Wolfenden (R)
71st (1929–1931)														George F. Brumm (R)	Charles J. Esterly (R)																	William R. Coyle (R)					Patrick J. Sullivan (R)
										J. Roland Kinzer (R)			C. Murray Turpin (R)				Robert F. Rich (R)																		Edmund F. Erk (R)
72nd (1931–1933)												Patrick J. Boland (D)			Norton L. Lichtenwalner (D)									Harry L. Haines (D)
		Edward L. Stokes (R)				Robert L. Davis (R)													Joseph F. Biddle (R)		Howard W. Stull (R)

1933–1943: 34 seats

Following the 1930 Census, the delegation lost two seats.

Congress	District											District											District											District
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd	33rd	34th
73rd (1933–1935)	Harry C. Ransley (R)	James M. Beck (R)	Alfred M. Waldron (R)	George W. Edmonds (R)	James J. Connolly (R)	Edward L. Stokes (R)	George P. Darrow (R)	James Wolfenden (R)	Henry Winfield Watson (R)	J. Roland Kinzer (R)		Patrick J. Boland (D)	C. Murray Turpin (R)	George F. Brumm (R)	William E. Richardson (D)	Louis T. McFadden (R)	Robert F. Rich (R)	J. William Ditter (R)	Benjamin K. Focht (R)	Isaac H. Doutrich (R)	Thomas C. Cochran (R)		Francis E. Walter (D)	Harry L. Haines (D)	J. Banks Kurtz (R)	J. Buell Snyder (D)	Charles I. Faddis (D)	J. Howard Swick (R)	Nathan L. Strong (R)	William M. Berlin (D)	Charles N. Crosby (D)	J. Twing Brooks (D)		M. Clyde Kelly (R)	Michael J. Muldowney (R)	Henry Ellenbogen (D)	Matthew A. Dunn (D)
									Oliver W. Frey (D)
74th (1935–1937)		William H. Wilson (R)	Clare G. Fenerty (R)	J. Burrwood Daly (D)	Frank J.G. Dorsey (D)	Michael J. Stack (D)								James H. Gildea (D)		Charles E. Dietrich (D)					Denis J. Driscoll (D)				Don Gingery (D)			Charles R. Eckert (D)	Joseph Gray (D)					James L. Quinn (D)	Theodore L. Moritz (D)
75th (1937–1939)	Leon Sacks (D)	James P. McGranery (D)	Michael J. Bradley (D)				Ira W. Drew (D)						J. Harold Flannery (D)		Guy L. Moser (D)	Albert G. Rutherford (R)				Guy J. Swope (D)	Benjamin Jarrett (R)									Robert G. Allen (D)		Peter J. De Muth (D)			Herman P. Eberharter (D)
76th (1939–1941)					Fred C. Gartner (R)	Francis J. Myers (D)	George P. Darrow (R)		Charles L. Gerlach (R)					Ivor D. Fenton (R)					Richard M. Simpson (R)	John C. Kunkel (R)				Chester H. Gross (R)	James E. Van Zandt (R)			Louis E. Graham (R)	Harve Tibbott (R)		Robert L. Rodgers (R)	Robert J. Corbett (R)		John McDowell (R)		Joseph A. McArdle (D)
77th (1941–1943)				John E. Sheridan (D)	Francis R. Smith (D)		Hugh Scott (R)																	Harry L. Haines (D)						Augustine B. Kelley (D)		Thomas E. Scanlon (D)		Samuel A. Weiss (D)			James A. Wright (D)
																																				Elmer J. Holland (D)

1943–1953: 33 seats

Following the 1940 Census, the delegation lost one seat. For the 78th Congress, there were 32 districts and 1 at-large seat. Starting with the 79th Congress, however, there were 33 districts.

Congress	District											District											District											District			At-large state-wide	Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd
78th (1943–1945)	James A. Gallagher (R)	James P. McGranery (D)	Michael J. Bradley (D)	John E. Sheridan (D)	C. Frederick Pracht (R)	Francis J. Myers (D)	Hugh Scott (R)	James Wolfenden (R)	Charles L. Gerlach (R)	J. Roland Kinzer (R)		John W. Murphy (D)	Thomas B. Miller (R)	Ivor D. Fenton (R)	Daniel K. Hoch (D)	Wilson D. Gillette (R)	Thomas E. Scanlon (D)	J. William Ditter (R)	Richard M. Simpson (R)	John C. Kunkel (R)	Leon H. Gavin (R)		Francis E. Walter (D)	Chester H. Gross (R)	James E. Van Zandt (R)	J. Buell Snyder (D)	Grant Furlong (D)	Louis E. Graham (R)	Harve Tibbott (R)	Augustine B. Kelley (D)	Robert L. Rodgers (R)	Samuel A. Weiss (D)		Herman P. Eberharter (D)	James A. Wright (D)		William I. Troutman (R)	78th (1943–1945)
		Joseph M. Pratt (R)
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th		31st	32nd		33rd	Congress
79th (1945–1947)	William A. Barrett (D)	William T. Granahan (D)	Michael J. Bradley (D)	John E. Sheridan (D)	William J. Green Jr. (D)	Herbert J. McGlinchey (D)	James Wolfenden (R)	Charles L. Gerlach (R)	J. Roland Kinzer (R)	John W. Murphy (D)		Daniel J. Flood (D)	Ivor D. Fenton (R)	Daniel K. Hoch (D)	Wilson D. Gillette (R)	Robert F. Rich (R)	Samuel K. McConnell Jr. (R)	Richard M. Simpson (R)	John C. Kunkel (R)	Leon H. Gavin (R)	Francis E. Walter (D)		Chester H. Gross (R)	D. Emmert Brumbaugh (R)	J. Buell Snyder (D)	Thomas E. Morgan (D)	Louis E. Graham (R)	Harve Tibbott (R)	Augustine B. Kelley (D)	Robert L. Rodgers (R)	Howard E. Campbell (R)	Robert J. Corbett (R)		James G. Fulton (R)	Herman P. Eberharter (D)		Samuel A. Weiss (D)	79th (1945–1947)
																									Carl H. Hoffman (R)
80th (1947–1949)	James A. Gallagher (R)	Robert N. McGarvey (R)	Hardie Scott (R)	Franklin J. Maloney (R)	George W. Sarbacher Jr. (R)	Hugh Scott (R)	E. Wallace Chadwick (R)		Paul B. Dague (R)	James P. Scoblick (R)		Mitchell Jenkins (R)		Frederick A. Muhlenberg (R)										James E. Van Zandt (R)	William J. Crow (R)					Carroll D. Kearns (R)	John McDowell (R)						Frank Buchanan (D)	80th (1947–1949)
81st (1949–1951)	William A. Barrett (D)	William T. Granahan (D)		Earl Chudoff (D)	William J. Green Jr. (D)		Benjamin F. James (R)	Franklin H. Lichtenwalter (R)		Harry P. O'Neill (D)		Daniel J. Flood (D)		George M. Rhodes (D)									James F. Lind (D)		Anthony Cavalcante (D)			Robert L. Coffey Jr. (D)			Harry J. Davenport (D)							81st (1949–1951)
82nd (1951–1953)								Albert C. Vaughn (R)							Joseph L. Carrigg (R)	Alvin Bush (R)			Walter M. Mumma (R)						Edward L. Sittler Jr. (R)			John P. Saylor (R)			Harmar D. Denny Jr. (R)							82nd (1951–1953)

1953–1963: 30 seats

Following the 1950 Census, the delegation lost three seats.

Congress	District											District											District										Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th	28th	29th	30th
83rd (1953–1955)	William A. Barrett (D)	William T. Granahan (D)	James A. Byrne (D)	Earl Chudoff (D)	William J. Green Jr. (D)	Hugh Scott (R)	Benjamin F. James (R)	Karl C. King (R)	Paul B. Dague (R)	Joseph L. Carrigg (R)		Edward J. Bonin (R)	Ivor D. Fenton (R)	Samuel K. McConnell Jr. (R)	George M. Rhodes (D)	Francis E. Walter (D)	Walter M. Mumma (R)	Alvin Bush (R)	Richard M. Simpson (R)	S. Walter Stauffer (R)	James E. Van Zandt (R)		Augustine B. Kelley (D)	John P. Saylor (R)	Leon H. Gavin (R)	Carroll D. Kearns (R)	Louis E. Graham (R)	Thomas E. Morgan (D)	James G. Fulton (R)	Herman P. Eberharter (D)	Robert J. Corbett (R)	Vera Buchanan (D)	83rd (1953–1955)
84th (1955–1957)												Daniel J. Flood (D)								James M. Quigley (D)							Frank M. Clark (D)						84th (1955–1957)
85th (1957–1959)		Kathryn E. Granahan (D)						Willard S. Curtin (R)												S. Walter Stauffer (R)												Elmer J. Holland (D)	85th (1957–1959)
86th (1959–1961)				Robert N.C. Nix (D)		Herman Toll (D)	William H. Milliken Jr. (R)			Stanley A. Prokop (D)				John A. Lafore Jr. (R)						James M. Quigley (D)			John H. Dent (D)							William S. Moorhead (D)			86th (1959–1961)
																			Douglas H. Elliott (R)
87th (1961–1963)										William Scranton (R)				Richard S. Schweiker (R)				Herman T. Schneebeli (R)	J. Irving Whalley (R)	George Atlee Goodling (R)													87th (1961–1963)

1963–1973: 27 seats

Following the 1960 Census, the delegation lost three seats.

Congress	District											District											District							Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th	26th	27th
88th (1963–1965)	William A. Barrett (D)	Robert N.C. Nix (D)	James A. Byrne (D)	Herman Toll (D)	William J. Green Jr. (D)	George M. Rhodes (D)	William H. Milliken Jr. (R)	Willard S. Curtin (R)	Paul B. Dague (R)	Joseph M. McDade (R)		Daniel J. Flood (D)	J. Irving Whalley (R)	Richard S. Schweiker (R)	William S. Moorhead (D)	Fred B. Rooney (D)	John C. Kunkel (R)	Herman T. Schneebeli (R)	Robert J. Corbett (R)	George Atlee Goodling (R)	Elmer J. Holland (D)		John H. Dent (D)	John P. Saylor (R)	Albert W. Johnson (R)	James D. Weaver (R)	Frank M. Clark (D)	Thomas E. Morgan (D)	James G. Fulton (R)	88th (1963–1965)
89th (1965–1967)					William J. Green III (D)		G. Robert Watkins (R)													Nathaniel N. Craley Jr. (D)						Joseph P. Vigorito (D)				89th (1965–1967)
90th (1967–1969)				Joshua Eilberg (D)			Lawrence G. Williams (R)	Edward G. Biester Jr. (R)	G. Robert Watkins (R)								Edwin D. Eshleman (R)			George Atlee Goodling (R)										90th (1967–1969)
91st (1969–1971)						Gus Yatron (D)								R. Lawrence Coughlin (R)							Joseph M. Gaydos (D)									91st (1969–1971)
92nd (1971–1973)									John H. Ware III (R)																				William S. Conover (R)	92nd (1971–1973)

1973–1983: 25 seats

Following the 1970 Census, the delegation lost two seats.

Congress	District											District											District					Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th
93rd (1973–1975)	William A. Barrett (D)	Robert N.C. Nix (D)	William J. Green III (D)	Joshua Eilberg (D)	John H. Ware III (R)	Gus Yatron (D)	Lawrence G. Williams (R)	Edward G. Biester Jr. (R)	Bud Shuster (R)	Joseph M. McDade (R)		Daniel J. Flood (D)	John P. Saylor (R)	R. Lawrence Coughlin (R)	William S. Moorhead (D)	Fred B. Rooney (D)	Edwin D. Eshleman (R)	Herman T. Schneebeli (R)	H. John Heinz III (R)	George Atlee Goodling (R)	Joseph M. Gaydos (D)		John H. Dent (D)	Thomas E. Morgan (D)	Albert W. Johnson (R)	Joseph P. Vigorito (D)	Frank M. Clark (D)	93rd (1973–1975)
94th (1975–1977)					Richard T. Schulze (R)		Robert W. Edgar (D)						John P. Murtha (D)							William F. Goodling (R)							Gary A. Myers (R)	94th (1975–1977)
95th (1977–1979)	Michael J. Myers (D)		Raymond F. Lederer (D)					Peter H. Kostmayer (D)									Robert S. Walker (R)	Allen E. Ertel (D)	Doug Walgren (D)					Austin J. Murphy (D)	Joseph S. Ammerman (D)	Marc L. Marks (R)		95th (1977–1979)
96th (1979–1981)		William H. Gray (D)		Charles F. Dougherty (R)												Don Ritter (R)							Donald A. Bailey (D)		William F. Clinger Jr. (R)		Eugene Atkinson (D)	96th (1979–1981)
97th (1981–1983)	Thomas M. Foglietta (D)		Joseph F. Smith (D)					James K. Coyne III (R)				James L. Nelligan (R)			William J. Coyne (D)													97th (1981–1983)

1983–1993: 23 seats

Following the 1980 Census, the delegation lost two seats.

Congress	District											District											District			Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st	22nd	23rd
98th (1983–1985)	Thomas M. Foglietta (D)	William H. Gray (D)	Robert A. Borski Jr. (D)	Joseph P. Kolter (D)	Richard T. Schulze (R)	Gus Yatron (D)	Robert W. Edgar (D)	Peter H. Kostmayer (D)	Bud Shuster (R)	Joseph M. McDade (R)		Frank G. Harrison (D)	John P. Murtha (D)	R. Lawrence Coughlin (R)	William J. Coyne (D)	Don Ritter (R)	Robert S. Walker (R)	George Gekas (R)	Doug Walgren (D)	William F. Goodling (R)	Joseph M. Gaydos (D)		Tom Ridge (R)	Austin J. Murphy (D)	William F. Clinger Jr. (R)	98th (1983–1985)
99th (1985–1987)												Paul E. Kanjorski (D)														99th (1985–1987)
100th (1987–1989)							Curt Weldon (R)																			100th (1987–1989)
101st (1989–1991)																										101st (1989–1991)
102nd (1991–1993)																			Rick Santorum (R)							102nd (1991–1993)

1993–2003: 21 seats

Following the 1990 Census, the delegation lost two seats.

Congress	District											District											District	Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th	20th		21st
103rd (1993–1995)	Thomas M. Foglietta (D)	Lucien E. Blackwell (D)	Robert A. Borski Jr. (D)	Ronald Klink (D)	William F. Clinger Jr. (R)	Tim Holden (D)	Curt Weldon (R)	James C. Greenwood (R)	Bud Shuster (R)	Joseph M. McDade (R)		Paul E. Kanjorski (D)	John P. Murtha (D)	Marjorie Margolies-Mezvinsky (D)	William J. Coyne (D)	Paul F. McHale Jr. (D)	Robert S. Walker (R)	George Gekas (R)	Rick Santorum (R)	William F. Goodling (R)	Austin J. Murphy (D)		Tom Ridge (R)	103rd (1993–1995)
104th (1995–1997)		Chaka Fattah (D)												Jon D. Fox (R)					Michael F. Doyle (D)		Frank Mascara (D)		Phil English (R)	104th (1995–1997)
105th (1997–1999)					John E. Peterson (R)												Joseph R. Pitts (R)							105th (1997–1999)
	Bob Brady (D)
106th (1999–2001)										Don Sherwood (R)				Joseph M. Hoeffel (D)		Patrick J. Toomey (R)								106th (1999–2001)
107th (2001–2003)				Melissa Hart (R)																Todd Platts (R)				107th (2001–2003)

2003–2013: 19 seats

Following the 2000 Census, the delegation lost two seats.

Congress	District											District									Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th	19th
108th (2003–2005)	Bob Brady (D)	Chaka Fattah (D)	Phil English (R)	Melissa Hart (R)	John E. Peterson (R)	Jim Gerlach (R)	Curt Weldon (R)	James C. Greenwood (R)	Bill Shuster (R)	Don Sherwood (R)		Paul E. Kanjorski (D)	John P. Murtha (D)	Joseph M. Hoeffel (D)	Michael F. Doyle (D)	Patrick J. Toomey (R)	Joseph R. Pitts (R)	Tim Holden (D)	Timothy Murphy (R)	Todd Platts (R)	108th (2003–2005)
109th (2005–2007)								Michael Fitzpatrick (R)						Allyson Schwartz (D)		Charles Dent (R)					109th (2005–2007)
110th (2007–2009)				Jason Altmire (D)			Joe Sestak (D)	Patrick Murphy (D)		Christopher Carney (D)											110th (2007–2009)
111th (2009–2011)			Kathy Dahlkemper (D)		Glenn Thompson (R)																111th (2009–2011)
													Mark Critz (D)
112th (2011–2013)			Mike Kelly (R)				Pat Meehan (R)	Mike Fitzpatrick (R)		Tom Marino (R)		Lou Barletta (R)									112th (2011–2013)

2013–present: 18 seats

Following the 2010 Census, the delegation lost one seat. With court ordered Redistricting in Pennsylvania on February 19, 2018, none of the congressmen who served in 115th congress and were re-elected are in the same district in the 116th Congress.

Congress	District											District								Congress
	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th		11th	12th	13th	14th	15th	16th	17th	18th
113th (2013–2015)	Bob Brady (D)	Chaka Fattah (D)	Mike Kelly (R)	Scott Perry (R)	Glenn Thompson (R)	Jim Gerlach (R)	Pat Meehan (R)	Mike Fitzpatrick (R)	Bill Shuster (R)	Tom Marino (R)		Lou Barletta (R)	Keith Rothfus (R)	Allyson Schwartz (D)	Michael F. Doyle (D)	Charlie Dent (R)	Joseph R. Pitts (R)	Matt Cartwright (D)	Timothy Murphy (R)	113th (2013–2015)
114th (2015–2017)		Dwight Evans (D)				Ryan Costello (R)								Brendan Boyle (D)						114th (2015–2017)
115th (2017–2019)								Brian Fitzpatrick (R)									Lloyd Smucker (R)			115th (2017–2019)
							Mary Gay Scanlon (D)									Susan Wild (D)			Conor Lamb (D)
116th (2019–2021)	Brian Fitzpatrick (R)	Brendan Boyle (D)	Dwight Evans (D)	Madeleine Dean (D)	Mary Gay Scanlon (D)	Chrissy Houlahan (D)	Susan Wild (D)	Matt Cartwright (D)	Dan Meuser (R)	Scott Perry (R)		Lloyd Smucker (R)	Tom Marino (R)	John Joyce (R)	Guy Reschenthaler (R)	Glenn Thompson (R)	Mike Kelly (R)	Conor Lamb (D)	Michael F. Doyle (D)	116th (2019–2021)
													Fred Keller (R)

United States Senate

Current delegation

Senator Bob Casey Jr.
(D)

Senator Pat Toomey
(R)

Class 1 senators	Congress	Class 3 senators
William Maclay (Anti-Admin)	1st (1789–1791)	Robert Morris (Pro-Admin)
Vacant	2nd (1791–1793)
Albert Gallatin (D-R)	3rd (1793–1795)
James Ross (Pro-Admin)
	4th (1795–1797)	William Bingham (F)
	5th (1797–1799)
	6th (1799–1801)
	7th (1801–1803)	Peter Muhlenberg (D-R)
		George Logan (D-R)
Samuel Maclay (D-R)	8th (1803–1805)
	9th (1805–1807)
	10th (1807–1809)	Andrew Gregg (D-R)
Michael Leib (D-R)
	11th (1809–1811)
	12th (1811–1813)
	13th (1813–1815)	Abner Lacock (D-R)
Jonathan Roberts (D-R)
	14th (1815–1817)
	15th (1817–1819)
	16th (1819–1821)	Walter Lowrie (D-R)
William Findlay (D-R)	17th (1821–1823)
	18th (1823–1825)
	19th (1825–1827)	William Marks (Anti-J)
Isaac D. Barnard (D-R)	20th (1827–1829)
	21st (1829–1831)
	22nd (1831–1833)	William Wilkins (D-R)
George M. Dallas (D-R)
Samuel McKean (D-R)	23rd (1833–1835)
		James Buchanan (D-R)
	24th (1835–1837)
	25th (1837–1839)
Daniel Sturgeon (D)	26th (1839–1841)
	27th (1841–1843)
	28th (1843–1845)
	29th (1845–1847)
		Simon Cameron (D)
	30th (1847–1849)
	31st (1849–1851)	James Cooper (W)
Richard Brodhead (D)	32nd (1851–1853)
	33rd (1853–1855)
	34th (1855–1857)	William Bigler (D)
Simon Cameron (R)	35th (1857–1859)
	36th (1859–1861)
	37th (1861–1863)	Edgar Cowan (R)
David Wilmot (R)
Charles R. Buckalew (D)	38th (1863–1865)
	39th (1865–1867)
	40th (1867–1869)	Simon Cameron (R)
John Scott (R)	41st (1869–1871)
	42nd (1871–1873)
	43rd (1873–1875)
William A. Wallace (D)	44th (1875–1877)
	45th (1877–1879)
		James Donald Cameron (R)
	46th (1879–1881)
John I. Mitchell (R)	47th (1881–1883)
	48th (1883–1885)
	49th (1885–1887)
Matthew S. Quay (R)	50th (1887–1889)
	51st (1889–1891)
	52nd (1891–1893)
	53rd (1893–1895)
	54th (1895–1897)
	55th (1897–1899)	Boies Penrose (R)
Vacant	56th (1899–1901)
Matthew S. Quay (R)
	57th (1901–1903)
	58th (1903–1905)
Philander C. Knox (R)
	59th (1905–1907)
	60th (1907–1909)
George T. Oliver (R)	61st (1909–1911)
	62nd (1911–1913)
	63rd (1913–1915)
	64th (1915–1917)
Philander C. Knox (R)	65th (1917–1919)
	66th (1919–1921)
William E. Crow (R)	67th (1921–1923)
David A. Reed (R)		George Wharton Pepper (R)
	68th (1923–1925)
	69th (1925–1927)
	70th (1927–1929)	William S. Vare (R)
	71st (1929–1931)
		Joseph R. Grundy (R)
		James J. Davis (R)
	72nd (1931–1933)
	73rd (1933–1935)
Joseph F. Guffey (D)	74th (1935–1937)
	75th (1937–1939)
	76th (1939–1941)
	77th (1941–1943)
	78th (1943–1945)
	79th (1945–1947)	Francis J. Myers (D)
Edward Martin (R)	80th (1947–1949)
	81st (1949–1951)
	82nd (1951–1953)	James H. Duff (R)
	83rd (1953–1955)
	84th (1955–1957)
	85th (1957–1959)	Joseph S. Clark (D)
Hugh D. Scott Jr. (R)	86th (1959–1961)
	87th (1961–1963)
	88th (1963–1965)
	89th (1965–1967)
	90th (1967–1969)
	91st (1969–1971)	Richard S. Schweiker (R)
	92nd (1971–1973)
	93rd (1973–1975)
	94th (1975–1977)
H. John Heinz III (R)	95th (1977–1979)
	96th (1979–1981)
	97th (1981–1983)	Arlen Specter (R)
	98th (1983–1985)
	99th (1985–1987)
	100th (1987–1989)
	101st (1989–1991)
	102nd (1991–1993)
Harris Wofford (D)
	103rd (1993–1995)
Rick Santorum (R)	104th (1995–1997)
	105th (1997–1999)
	106th (1999–2001)
	107th (2001–2003)
	108th (2003–2005)
	109th (2005–2007)
Bob Casey Jr. (D)	110th (2007–2009)
	111th (2009–2011)	Arlen Specter (D)
	112th (2011–2013)	Pat Toomey (R)
	113th (2013–2015)
	114th (2015–2017)
	115th (2017–2019)
	116th (2019–2021)

Key

Key to party colors and abbreviations for members of the U.S. Congress
American (Know Nothing) (K-N) Anti-Jacksonian (Anti-J), National Republican (NR) Anti-Administration (Anti-Admin) Anti-Masonic (Anti-M) Conservative (Con) Democratic (D)	Dixiecrat (Dix), States' rights (SR) Democratic-Republican (D-R) Farmer–Labor (FL) Federalist (F) Free Soil (FS) Free Silver (FSv)	Fusion (FU) Greenback (GB) Jacksonian (J) Nonpartisan League (NPL) Nullifier (N) Opposition Northern (O) Opposition Southern (O)	Populist (Pop) Pro-Administration (Pro-Admin) Progressive (Prog) Prohibition (Proh) Readjuster (Rea) Republican (R) Socialist (Soc)	Unionist (U) Whig (W) Independent, None, or Unaffiliated

See also

• List of United States congressional districts