11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45320 | Eaton | 15,454 |
| 45311 | Camden | 5,701 |
| 45381 | West Alexandria | 5,626 |
| 45338 | Lewisburg | 4,761 |
| 45347 | New Paris | 4,095 |
| 45321 | Eldorado | 1,272 |
| 45382 | West Manchester | 1,154 |
| 45003 | College Corner | 839 |
| 45330 | Gratis | 710 |
| 45378 | Verona | 539 |
| 45070 | West Elkton | 142 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Preble County, Ohio (US Census).