9 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 45177 | Wilmington | 22,924 |
| 45107 | Blanchester | 9,190 |
| 45169 | Sabina | 4,050 |
| 45113 | Clarksville | 3,877 |
| 45159 | New Vienna | 3,588 |
| 45148 | Midland | 1,592 |
| 45146 | Martinsville | 1,324 |
| 45164 | Port William | 175 |
| 45166 | Reesville | 60 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 9 ZCTAs in Clinton County, Ohio (US Census).