Gainesville
- County:
- Alachua County
- County Seat:
- Yes
- Area (mi²):
- 63.986
- State:
- Florida
Gainesville is a city located in Alachua County, Florida. Gainesville has a 2026 population of 148,720. It is also the county seat of Alachua County. Gainesville is currently growing at a rate of 0.81% annually and its population has increased by 4.53% since the most recent census, which recorded a population of 142,276 in 2020.