Zip Code | City | Population |
|---|---|---|
| 17325 | Gettysburg | 29,110 |
| 17350 | New Oxford | 13,343 |
| 17340 | Littlestown | 11,622 |
| 17316 | East Berlin | 8,544 |
| 17320 | Fairfield | 8,206 |
| 17307 | Biglerville | 5,594 |
| 17301 | Abbottstown | 4,201 |
| 17372 | York Springs | 3,851 |
| 17344 | McSherrystown | 3,633 |
| 17353 | Orrtanna | 2,870 |
| 17304 | Aspers | 2,845 |
| 17306 | Bendersville | 576 |
| 17303 | Arendtsville | 380 |
| 17343 | McKnightstown | 23 |