Area code 507

Area code 507 is the telephone numbering plan code for the southern fifth of Minnesota, including cities such as Rochester, Mankato, Worthington, Fairmont, Albert Lea, 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.

In the original 1947 plan, area codes containing "0" as a middle digit were only assigned to states that were entirely covered by a single area code. Area code 507, along with area code 606 in Kentucky and area code 607 in New York, were the first area codes with a middle digit of "0" to be assigned to states that were covered by more than one area code.

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