Area code 620

Area Code 620 covers telephone exchanges in most of southern Kansas. It was created as the result of a split from 316 on February 3, 2001. The area code stretches across the southern half of the state, from the Colorado border in the west to the Missouri border in the east. It completely surrounds 316, which now only serves Wichita and its inner suburbs, making it one of the six pairs of "doughnut area codes" in the numbering plan. Permissive dialing of 316 across southern Kansas continued until November 3, 2001.

Map of Kansas with area code 620 in red

The most populous cities covered by the area code are Dodge City, Garden City, Hutchinson and Pittsburg.

620 was created due to the growing proliferation of cell phones in the Wichita area. With the great majority of the old 316's landlines and cell phones located in the Wichita area, 620 is one of the most thinly populated area codes in the nation. Under the most recent projections, southern Kansas will not need another area code until the fourth quarter of 2037.

Major cities in area code 620

Boundaries of area code 620

The boundary between area codes 620 and 785 runs from west to east roughly following a path along K-4 and K-96. The code boundary dips along I-135 in McPherson County and continues east to just north of Emporia in Lyon County along the Kansas Turnpike, where the boundaries of area codes 620, 785 and 913 meet. Area code 620 shares its northern boundary with area code 913's southern boundary, ending south of the Kansas City metropolitan area.

All of Sedgwick County, along with parts of Butler, Harvey, Kingman, Reno and Sumner counties, remain in area code 316.

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gollark: (not hidden ones, general doors)
gollark: I look for exit doors, d6.
gollark: It could strike at us at any time.
gollark: I don't trust it.

References
    Kansas area codes: 316, 620, 785, 913
    North: 785, 913
    West: 719 area code 620 completely surrounds 316 East: 417
    South: 580, 539/918
    Colorado area codes: 303/720, 719, 970
    Missouri area codes: 314, 417, 573, 636, 660, 816
    Oklahoma area codes: 405, 539/918, 580

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