
Adams County
- State:
- Pennsylvania
- County Seat:
- Gettysburg
Adams County's estimated 2025 population is 108,326 with a growth rate of 0.73% in the past year according to the most recent United States census data. Adams County is the 30th largest county in Pennsylvania. The 2010 population was 101,472 and has seen a growth of 6.75% since that time.