
Lamar County
- State:
- Georgia
- County Seat:
- Barnesville
Lamar County's estimated 2025 population is 22,257 with a growth rate of 4.35% in the past year according to the most recent United States census data. Lamar County is the 84th largest county in Georgia. The 2010 population was 18,260 and has seen a growth of 21.89% since that time.