Cities and Towns in Jefferson County, Ohio
Founded in Jul 29, 1797, Jefferson County is one of 88 counties in the state of Ohio. Historically, Jefferson County was formed from Washington County. The city of Steubenville is the county seat. With FIPS code of 81, Jefferson County has a population of 64,789 and area of 409.61 square miles (1,061 km²).
List of all cities in Jefferson County, OH alphabetically
| City/Town | Postal Code | Area Code |
| Adena, OH | 43901 | 740 |
| Amsterdam, OH | 43903 | 740 |
| Bergholz, OH | 43908 | 740 |
| Bloomingdale, OH | 43910 | 740 |
| Brilliant, OH | 43913 | 740 |
| Connorsville, OH | 43943 | 740 |
| Cream City, OH | 43932 | 740 |
| Dillonvale, OH | 43917 | 740 |
| Dunglen, OH | 43917 | 740 |
| East Springfield, OH | 43925 | 740 |
| Empire, OH | 43926 | 740 |
| Georges Run, OH | 43938 | 740 |
| Glen Robbins, OH | 43943 | 740 |
| Hammondsville, OH | 43930 | 740 |
| Irondale, OH | 43932 | 740 |
| Mingo Jct, OH | 43938 | 740 |
| Mingo Junction, OH | 43938 | 740 |
| Mount Pleasant, OH | 43939 | 740 |
| New Alexandria, OH | 43938 | 740 |
| Newtown, OH | 43917 | 740 |
| Piney Fork, OH | 43941 | 740 |
| Rayland, OH | 43943 | 740 |
| Richmond, OH | 43944 | 740 |
| Smithfield, OH | 43948 | 740 |
| Steubenville, OH | 43952 | 740 |
| 43953 | 740 | |
| Stratton, OH | 43961 | 740 |
| Tidd Dale, OH | 43913 | 740 |
| Tiltonsville, OH | 43963 | 740 |
| Toronto, OH | 43964 | 740 |
| Unionport, OH | 43910 | 740 |
| Wintersville, OH | 43952 | 740 |
| 43953 | 740 | |
| Wolf Run, OH | 43970 | 740 |
| Yorkville, OH | 43971 | 740 |
