| Locality | Post Code |
|---|---|
| Bidwell, Gallia | 45614 |
| Cheshire, Gallia | 45620 |
| Crown City, Gallia | 45623 |
| Ewington, Gallia | 45686 |
| Gallipolis, Gallia | 45631 |
| Kerr, Gallia | 45643 |
| Northup, Gallia | 45658 |
| Patriot, Gallia | 45658 |
| Rio Grande, Gallia | 45674 |
| Rodney, Gallia | 45631 |
| Thurman, Gallia | 45685 |
| Vinton, Gallia | 45686 |