Racine County is a county in southeastern Wisconsin. As of the 2020 census, its population was 197,727, making it Wisconsin's fifth-most populous county. Its county seat is Racine. The county was founded in 1836, then a part of the Wisconsin Territory. Racine County comprises the Racine metropolitan statistical area. This area is part of the Milwaukee-Racine-Waukesha combined statistical area. According to the U.S. Census Bureau, the county has an area of 792 square miles, of which 333 square miles is land and 460 square miles is water.