
Lake Butler
- County:
- Union County
- County Seat:
- Yes
- Area (mi²):
- 11.401
- State:
- Florida
Lake Butler is a CDP located in Union County, Florida. Lake Butler has a 2025 population of 18,356. It is also the county seat of Union County. Lake Butler is currently growing at a rate of 1.08% annually and its population has increased by 3.71% since the most recent census, which recorded a population of 17,700 in 2020.
The average household income in Lake Butler is $289,593 with a poverty rate of 2%. The median age in Lake Butler is 43.8 years: 45.6 years for males, and 43.4 years for females.