Lake Bronson is a city in Kittson County, Minnesota, United States. The population was 178 at the 2020 census. Lake Bronson State Park is …Lake Bronson is a city in Kittson County, Minnesota, United States. The population was 178 at the 2020 census. Lake Bronson State Park is nearby. A post office was established under the name Bronson in 1904. The city was named for Giles Bronson, an early settler.