Marathon County
County in Wisconsin
Marathon County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 138,013. Marathon County's seat is Wausau. It was founded in 1850, created from a portion of Portage County. At that time the county... Wikipedia
Cities: Wausau, Marathon City, Mosinee, and more
County seat: Wausau
Population: 137,958 (2022)
Slogan: Where Time is On Your Side
Congressional district: 7th
Named for: Marathon, Greece