
Fayette County
- State:
- Tennessee
- County Seat:
- Somerville
Fayette County's estimated 2025 population is 45,849 with a growth rate of 1.86% in the past year according to the most recent United States census data. Fayette County is the 36th largest county in Tennessee. The 2010 population was 38,427 and has seen a growth of 19.31% since that time.