Area Code Atlas

Original assignment of area codes 913 and 316 in Kansas

Area codes 913 and 316 were assigned in 1947 as part of the original North American Numbering Plan. Kansas was divided lengthwise into two numbering plan areas: 913 for northern Kansas including Kansas City, and 316 for southern Kansas including Wichita.

Original assignment of area codes 913 and 316 in Kansas

Area codes 913 and 316 were assigned in 1947 as part of the original North American Numbering Plan. Kansas was divided lengthwise into two numbering plan areas: 913 for northern Kansas including Kansas City, and 316 for southern Kansas including Wichita.

Original assignment of area codes 913 and 316 in Kansas

Area codes 913 and 316 were assigned in 1947 as part of the original North American Numbering Plan. Kansas was divided lengthwise into two numbering plan areas: 913 for northern Kansas including Kansas City, and 316 for southern Kansas including Wichita.

Area code 316 established for southern Kansas

In October 1947, area code 316 was established as part of the original North American Numbering Plan. It was assigned to all of southern Kansas, including Wichita, Dodge City, Emporia, and Garden City.

NPA 316 and 913 assigned to Kansas

The final North American Numbering Plan assignments in October 1947 designated area code 316 for the southern half of Kansas, including Wichita, and area code 913 for the northern half, including Kansas City and Topeka. This division was designed to avoid splitting major east-west toll traffic routes.

316 Numbering Plan Area (NPA) Split, Creating 620 NPA (Kansas)

Area code 620 split from 316

On February 3, 2001, most of southern Kansas was split from area code 316 to form the new area code 620. Area code 316 was reduced to cover only the Wichita metropolitan area, while 620 took over the rest of southern Kansas, creating a 'doughnut' configuration with 316 surrounded by 620.

Mandatory dialing of area code 620 in southern Kansas

On November 2, 2001, permissive dialing ended and mandatory use of area code 620 began for calls in the affected region. This marked the completion of the transition from area code 316 to 620 for most of southern Kansas.

Permissive dialing period ends for 316 and 620

Permissive dialing of area code 316 across southern Kansas ended on November 3, 2001. After this date, callers were required to use the correct area code, either 316 for Wichita or 620 for the rest of southern Kansas.

Permissive dialing period for 316 and 620 ends

Permissive dialing allowing calls to be completed using the old 316 area code across southern Kansas continued until November 3, 2001, after which ten-digit dialing became mandatory.