Oshkosh
- County:
- Garden County
- County Seat:
- Yes
- Area (mi²):
- 0.672
- State:
- Nebraska
Oshkosh is a city located in Garden County, Nebraska. Oshkosh has a 2026 population of 767. It is also the county seat of Garden County. Oshkosh is currently declining at a rate of -0.39% annually and its population has decreased by -5.66% since the most recent census, which recorded a population of 813 in 2020.