Fredonia
- County:
- Ozaukee County
- County Seat:
- No
- Area (mi²):
- 2.236
- State:
- Wisconsin
Fredonia is a village located in Ozaukee County, Wisconsin. Fredonia has a 2026 population of 2,281. Fredonia is currently declining at a rate of -0.09% annually but its population has increased by 0.35% since the most recent census, which recorded a population of 2,273 in 2020.