9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45177 | Wilmington | 22,442 |
| 45107 | Blanchester | 9,748 |
| 45169 | Sabina | 4,410 |
| 45113 | Clarksville | 3,808 |
| 45159 | New Vienna | 3,333 |
| 45148 | Midland | 1,675 |
| 45146 | Martinsville | 1,129 |
| 45164 | Port William | 366 |
| 45166 | Reesville | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Clinton County, Ohio (US Census).