St. Croix County, Wisconsin

Saint Croix County
Location within the U.S. state of Wisconsin
Wisconsin's location within the U.S.
Coordinates: 45°02′N 92°27′W / 45.04°N 92.45°W / 45.04; -92.45
Country United States
State Wisconsin
Founded1849
Named afterSt. Croix River
SeatHudson
Largest cityHudson
Area
  Total
736 sq mi (1,910 km2)
  Land722 sq mi (1,870 km2)
  Water13 sq mi (30 km2)  1.8%
Population
 (2020)
  Total
93,536
  Estimate 
(2023)
96,763
  Density129.5/sq mi (50.0/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district7th
Websitewww.sccwi.gov

St. Croix County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 93,536. Its county seat is Hudson. The county was created in 1840 (then in the Wisconsin Territory) and organized in 1849. St. Croix County is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area. Between 2000 and 2010, it was Wisconsin's fastest-growing county. Its growth has continued since 2010 in part due to people moving out of the central Minneapolis-St. Paul counties and into St. Croix County.