Founded in 1799, Jefferson County is one of 82 counties in the state of Mississippi. Historically, Jefferson County was one of two original Counties (formerly Pickering). The city of Fayette is the county seat. With FIPS code of 63, Jefferson County has a population of 7,205 and area of 519 square miles (1,344 km2).
List of all cities in Jefferson County, MS alphabetically
| City/Town | Postal Code | Area Code |
| Alcorn State University, MS | 39096 | 601/769 |
| Fayette, MS | 39069 | 601/769 |
| Fayette, MS | 39081 | 601/769 |
| Harriston, MS | 39081 | 601/769 |
| Lorman, MS | 39096 | 601/769 |
| Union Church, MS | 39668 | 601/769 |