Carlisle is a borough in and the county seat of Cumberland County, Pennsylvania, United States.[1] As of the 2020 census, the borough population was 20,118.[2]
- ↑ National Association of Counties. "NACo County Explorer". Retrieved March 12, 2024.
- ↑ "QuickFacts: Carlisle borough, Pennsylvania". United States Census Bureau. Retrieved March 12, 2024.