
Carlisle
- County:
- Cumberland County
- County Seat:
- Yes
- Area (mi²):
- 5.533
- State:
- Pennsylvania
Carlisle is a borough located in Cumberland County, Pennsylvania. Carlisle has a 2025 population of 23,804. It is also the county seat of Cumberland County. Carlisle is currently growing at a rate of 3.17% annually and its population has increased by 18.16% since the most recent census, which recorded a population of 20,146 in 2020.
The average household income in Carlisle is $80,235 with a poverty rate of 17.39%. The median age in Carlisle is 34.4 years: 33 years for males, and 36.4 years for females.