
Oshkosh
- County:
- Winnebago County
- County Seat:
- Yes
- Area (mi²):
- 27.071
- State:
- Wisconsin
Oshkosh is a city located in Winnebago County, Wisconsin. Oshkosh has a 2025 population of 65,790. It is also the county seat of Winnebago County. Oshkosh is currently declining at a rate of -0.3% annually and its population has decreased by -1.47% since the most recent census, which recorded a population of 66,774 in 2020.
The average household income in Oshkosh is $77,064 with a poverty rate of 15.88%. The median age in Oshkosh is 34.2 years: 34.1 years for males, and 34.3 years for females.