
Allen County
- State:
- Kentucky
- County Seat:
- Scottsville
Allen County's estimated 2025 population is 22,798 with a growth rate of 2.27% in the past year according to the most recent United States census data. Allen County is the 51st largest county in Kentucky. The 2010 population was 20,023 and has seen a growth of 13.86% since that time.