Bayfield County is a county located in the U.S. state of Wisconsin. As of the 2020 census, its population is 16,220. Its county seat is Washburn. The county was created in 1845 and organized in 1850. The Red Cliff Band of Lake Superior Chippewa has a reservation in Bayfield County and is the county's largest employer.

Douglas County is a county located at the northwest corner of the U.S. state of Wisconsin. As of the 2020 census, the population was 44,295 Its county seat is Superior. Douglas County is included in the Duluth, MN-WI Metropolitan Statistical Area.