20 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 43952 | Steubenville | 17,775 |
| 43953 | Steubenville | 11,857 |
| 43964 | Toronto | 9,061 |
| 43938 | Mingo Junction | 5,448 |
| 43943 | Rayland | 3,288 |
| 43910 | Bloomingdale | 3,195 |
| 43917 | Dillonvale | 2,647 |
| 43944 | Richmond | 2,562 |
| 43901 | Adena | 2,159 |
| 43963 | Tiltonsville | 1,191 |
| 43932 | Irondale | 1,147 |
| 43930 | Hammondsville | 1,090 |
| 43908 | Bergholz | 1,065 |
| 43913 | Brilliant | 1,065 |
| 43971 | Yorkville | 1,015 |
| 43948 | Smithfield | 638 |
| 43939 | Mount Pleasant | 313 |
| 43926 | Empire | 270 |
| 43961 | Stratton | 230 |
| 43925 | East Springfield | 65 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 20 ZCTAs in Jefferson County, Ohio (US Census).