A map of Minnesota area codes. 507 is in dark brown.
Area code 507 is a telephone area code 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. It was the third area code created for use in the state in 1954, following the original 218 and 612. It was created from the southwestern portion of 218 and the southern portion of 612.
The region was directly bordered by 612 (to the north) until that area code was divided in the 1990s. The western half of 507 bordered area code 320 starting in 1996, and then later came to border also area code 651 (1998) and area code 952 (2000). 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.
In August 2022, the North American Numbering Plan Administrator forecasted the exhaust of all available telephone numbers in 507 by 2025.[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.[2][3] Permissive calling began in January 2024. However, by late July 2024, callers continuing to dial the ordinary method will hear recorded messages to get them to dial the new method. New 924 numbers could be assigned as early as August 30, 2024.[4]
^Tribune, Mike Hughlett Star. "New area code planned for southern Minnesota". Star Tribune. Retrieved 2023-04-18.
^Tribune, Mike Hughlett Star. "There's a new area code in southern Minnesota's 507 region". Star Tribune. Retrieved 2023-04-18.
^"This is Minnesota's newest area code". FOX 9. 2023-04-18. Retrieved 2023-04-18.
^Wagner, Jeff (2024-02-06). "How are new area codes created? And what part of Minnesota could be next on the list? - CBS Minnesota". www.cbsnews.com. Retrieved 2024-02-07.
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