| Locality | Postal Code |
|---|---|
| Adena, Belmont | 43901 |
| Alledonia, Belmont | 43902 |
| Armstrong Mills, Belmont | 43933 |
| Bannock, Belmont | 43972 |
| Barnesville, Belmont | 43713 |
| Barton, Belmont | 43905 |
| Bellaire, Belmont | 43906 |
| Belmont, Belmont | 43718 |
| Bethesda, Belmont | 43719 |
| Blaine, Belmont | 43909 |
| Blainesville, Belmont | 43937 |
| Bridgeport, Belmont | 43912 |
| Colerain, Belmont | 43916 |
| Dilles Bottom, Belmont | 43947 |
| Fairpoint, Belmont | 43927 |
| Flushing, Belmont | 43977 |
| Glencoe, Belmont | 43928 |
| Holloway, Belmont | 43985 |
| Jacobsburg, Belmont | 43933 |
| Lafferty, Belmont | 43951 |
| Lansing, Belmont | 43934 |
| Martins Ferry, Belmont | 43935 |
| Maynard, Belmont | 43937 |
| Morristown, Belmont | 43759 |
| Neffs, Belmont | 43940 |
| Piedmont, Belmont | 43983 |