Fredonia
- County:
- Wilson County
- County Seat:
- Yes
- Area (mi²):
- 2.439
- State:
- Kansas
Fredonia is a city located in Wilson County, Kansas. Fredonia has a 2026 population of 2,071. It is also the county seat of Wilson County. Fredonia is currently declining at a rate of -0.77% annually and its population has decreased by -3.31% since the most recent census, which recorded a population of 2,142 in 2020.