14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 17325 | Gettysburg | 30,373 |
| 17350 | New Oxford | 13,169 |
| 17340 | Littlestown | 11,405 |
| 17316 | East Berlin | 8,497 |
| 17320 | Fairfield | 8,124 |
| 17307 | Biglerville | 5,467 |
| 17301 | Abbottstown | 4,133 |
| 17372 | York Springs | 4,045 |
| 17344 | McSherrystown | 3,719 |
| 17304 | Aspers | 3,171 |
| 17353 | Orrtanna | 2,825 |
| 17306 | Bendersville | 537 |
| 17303 | Arendtsville | 395 |
| 17343 | McKnightstown | 31 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Adams County, Pennsylvania (US Census).