
Cumberland County
- State:
- Tennessee
- County Seat:
- Crossville
Cumberland County's estimated 2025 population is 67,316 with a growth rate of 1.94% in the past year according to the most recent United States census data. Cumberland County is the 22nd largest county in Tennessee. The 2010 population was 56,193 and has seen a growth of 19.79% since that time.