| population | |
| Mount Gretna | 197 |
| population | |
| Mount Gretna Post Office (historical) |
 | Lancaster Airport | ~ 20.29 km |
| Muir Army Air Field (Fort Indiantown Gap) Airport | ~ 22.64 km |
| Harrisburg International Airport | ~ 25.45 km |
| Capital City Airport | ~ 32.42 km |
| Reading Regional Airport (Carl A Spaatz Field) | ~ 45.40 km |
| York Airport | ~ 50.02 km |
| Chester County G O Carlson Airport | ~ 59.45 km |
| Penn Valley Airport | ~ 72.03 km |
| Heritage Field | ~ 77.65 km |
