Thief River Falls, MN is currently using one area code which is area code 218. Area code 218 is one of two original area codes assigned to Minnesota and put into service on January 1, 1947.
In addition to Thief River Falls, MN area code 218 serves northern Minnesota including the larger communities of Andover, Duluth, Hibbing and Moorhead as well as many smaller communities in northern Minnesota.
Thief River Falls, MN is located in Pennington County and observes the Central Time Zone.
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