7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45631 | Gallipolis | 13,386 |
| 45614 | Bidwell | 5,450 |
| 45686 | Vinton | 3,372 |
| 45623 | Crown City | 3,203 |
| 45658 | Patriot | 2,539 |
| 45620 | Cheshire | 675 |
| 45674 | Rio Grande | 618 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Gallia County, Ohio (US Census).