8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 43724 | Caldwell | 9,183 |
| 43772 | Pleasant City | 1,748 |
| 45745 | Lower Salem | 1,049 |
| 45727 | Dexter City | 766 |
| 43788 | Summerfield | 624 |
| 43779 | Sarahsville | 531 |
| 43717 | Belle Valley | 121 |
| 43711 | Ava | 62 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Noble County, Ohio (US Census).