9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45177 | Wilmington | 22,683 |
| 45107 | Blanchester | 9,741 |
| 45169 | Sabina | 4,436 |
| 45113 | Clarksville | 3,826 |
| 45159 | New Vienna | 3,454 |
| 45148 | Midland | 1,822 |
| 45146 | Martinsville | 1,063 |
| 45164 | Port William | 294 |
| 45166 | Reesville | 50 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Clinton County, Ohio (US Census).