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Area code 620
Area code
Area code 620 is a telephone area code in the North American Numbering Plan that covers most of the southern half of the U.S. state of Kansas, with the exception of the city of Wichita, Kansas and immediate surroundings, which in a 2001 area code split retained the original area code 316 assigned in 1947.
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Despite its relatively modest population, Kansas was divided into two numbering plan areas (NPAs) when the first North American telephone numbering plan was established in 1947. Under a preliminary plan, area codes were to be assigned sequentially based on geography and Kansas received area codes 617 and 618. When the final plan was adopted In October 1947, Kansas' two numbering plan areas were redrawn. The southern half (Wichita, Dodge City, Emporia, Garden City) received 316, while the northern half (Kansas City, Topeka, Lawrence, Salina, Hays) got 913. The 316-913 dividing line ran from west to east roughly following a path along K-4 and K-96. It dipped along I-135 in McPherson County and continued east to just north of Emporia in Lyon County, and ended at the Missouri state line. The north-south split avoided cutting the major toll traffic routes that ran in east-west directions, a primary rule of traffic and implementation cost analysis. The dividing line ran from west to east roughly following a path along Kansas Routes 4 and 96 from the Colorado state line eastward. It dipped along Interstate 135 in McPherson County and continued east to just north of Emporia in Lyon County, and then all the way to the Missouri state line.
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Text: Wikipédia, CC BY-SA 4.0. · Image: User:S1312 (CC BY-SA 3.0) ·