Walker is a city in Cass County, Minnesota, United States. The population was 966 at the 2020 census. It is the county seat of Cass County.

Cass County is a county in the central part of the U.S. state of Minnesota. As of the 2020 census, the population was 30,066. Its county seat is Walker. The county was formed in 1851, and was organized in 1897.