
Grant County
- State:
- Kentucky
- County Seat:
- Williamstown
Grant County's estimated 2025 population is 25,909 with a growth rate of 0.56% in the past year according to the most recent United States census data. Grant County is the 44th largest county in Kentucky. The 2010 population was 24,681 and has seen a growth of 4.98% since that time.