Area codes 507 and 924

Area codes 507 and 924 are telephone area codes in the North American Numbering Plan for the southern fifth of Minnesota, including cities such as Rochester, Mankato, Worthington, Fairmont, Albert Lea, Northfield, and Austin.

The region was directly bordered by 612 (to the north) until that area code was divided in the 1990s.

The northern border of 507 was modified slightly so that expanding communities in and near the Twin Cities would be more closely linked with that region by telephone.

612 has now shrunk down to include just Minneapolis and a few surrounding suburbs, and no longer borders 507.

[1] Area code 924 was approved as an all-service overlay to area code 507 by the Minnesota Public Utilities Commission on March 30, 2023.