11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45320 | Eaton | 15,525 |
| 45311 | Camden | 6,056 |
| 45381 | West Alexandria | 5,690 |
| 45338 | Lewisburg | 4,639 |
| 45347 | New Paris | 4,081 |
| 45321 | Eldorado | 1,235 |
| 45382 | West Manchester | 1,082 |
| 45003 | College Corner | 624 |
| 45330 | Gratis | 614 |
| 45378 | Verona | 536 |
| 45070 | West Elkton | 151 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Preble County, Ohio (US Census).