23 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 43950 | Saint Clairsville | 16,404 |
| 43935 | Martins Ferry | 8,083 |
| 43906 | Bellaire | 7,779 |
| 43713 | Barnesville | 6,516 |
| 43912 | Bridgeport | 5,738 |
| 43947 | Shadyside | 4,893 |
| 43977 | Flushing | 2,757 |
| 43718 | Belmont | 2,696 |
| 43719 | Bethesda | 2,323 |
| 43942 | Powhatan Point | 2,012 |
| 43933 | Jacobsburg | 1,984 |
| 43983 | Piedmont | 657 |
| 43905 | Barton | 459 |
| 43940 | Neffs | 304 |
| 43928 | Glencoe | 255 |
| 43759 | Morristown | 240 |
| 43985 | Holloway | 231 |
| 43934 | Lansing | 135 |
| 43902 | Alledonia | 117 |
| 43972 | Bannock | 109 |
| 43951 | Lafferty | 42 |
| 43967 | Warnock | 31 |
| 43909 | Blaine | 31 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 23 ZCTAs in Belmont County, Ohio (US Census).