Red Lake County is a county in the Northwestern part of the U.S. state of Minnesota. As of the 2020 census, the population was 3,935, making it the third-least populous county in Minnesota. Its county seat is Red Lake Falls.

Polk County is a county in the northwestern part of the U.S. state of Minnesota. The population was 31,192 at the 2020 census. Its county seat is Crookston, and the largest community is East Grand Forks.