| Place Name | Mount Holly Springs |
| Place Type | Borough |
| ZIP Code(s) | 17065 |
| County | Cumberland County |
| Area Code(s) | 717 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 1,814 |
| Population Growth Rate (2010-19) | -1.72% |
| Majority Ethnicity | White 88.36% |
| Metro/Micro Stats Area | Harrisburg-Carlisle, PA |
| US Congressional District(s) | Pennsylvania 11th |
| State House Districts | 193 |
| State Senate Districts | 31 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.36% |
| African American | 4.72% |
| Hispanic | 0% |
| Asian | 0.1% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.82% |