Winnebago County, Wisconsin

Winnebago County
Location within the U.S. state of Wisconsin
Wisconsin's location within the U.S.
Coordinates: 44°04′N 88°38′W / 44.06°N 88.64°W / 44.06; -88.64
Country United States
State Wisconsin
Founded1848
Named afterWinnebago people
SeatOshkosh
Largest cityOshkosh
Area
  Total
579 sq mi (1,500 km2)
  Land434 sq mi (1,120 km2)
  Water144 sq mi (370 km2)  25%
Population
 (2020)
  Total
171,730
  Estimate 
(2023)
171,735
  Density395.1/sq mi (152.5/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional districts6th, 8th
Websitewww.co.winnebago.wi.us

Winnebago County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 171,730. Its county seat is Oshkosh. It was named for the historic Winnebago people, a federally recognized Native American tribe now known as the Ho-Chunk Nation. Chief Oshkosh was a Menominee leader in the area. Winnebago County comprises the Oshkosh-Neenah, WI Metropolitan Statistical Area, which is included in the Appleton-Oshkosh-Neenah, WI Combined Statistical Area.