
Spencer County
- State:
- Kentucky
- County Seat:
- Taylorsville
Spencer County's estimated 2025 population is 21,169 with a growth rate of 1.53% in the past year according to the most recent United States census data. Spencer County is the 55th largest county in Kentucky. The 2010 population was 17,167 and has seen a growth of 23.31% since that time.