where is mount holly springs, pa
Sponsored Topics. Mount Holly Springs is a borough in Cumberland County, Pennsylvania, United States. The population was 1,925 at the 2000 census. It is part of the HarrisburgâCarlisle Metropolitan Statistical Area. Mount Holly Springs is located at 40Â°6â²58â³N 77Â°11â²12â³W / 40.11611Â°N 77.18667Â°W / 40.11611; -77.18667 (40.116063, -77.186751).