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.

Red Lake Falls is a city and the county seat of Red Lake County, Minnesota, United States. The population was 1,339 at the 2020 census. It is the county seat of Red Lake County. The city lies in the middle of Red Lake Falls Township, from which it was separated when incorporated as a village in 1881. Its status was raised to that of a city in 1898.