Founded in 1904, Lamar County is one of 82 counties in the state of Mississippi. Historically, Lamar County was formed from Marion and Pearl River Counties. The city of Purvis is the county seat. With FIPS code of 73, Lamar County has a population of 65,353 and area of 497 square miles (1,287 km2).
List of all cities in Lamar County, MS alphabetically
| City/Town | Postal Code | Area Code |
| Baxterville, MS | 39455 | 601/769 |
| Carnes, MS | 39455 | 601/769 |
| Higgins, MS | 39482 | 601/769 |
| Lumberton, MS | 39455 | 601/769 |
| Melba, MS | 39482 | 601/769 |
| Oloh, MS | 39482 | 601/769 |
| Pine Ridge, MS | 39475 | 601/769 |
| Pistol Ridge, MS | 39455 | 601/769 |
| Purvis, MS | 39475 | 601/769 |
| Rock Hill, MS | 39475 | 601/769 |
| Seneca, MS | 39455 | 601/769 |
| Sumrall, MS | 39482 | 601/769 |
| Talowah, MS | 39455 | 601/769 |
| Villa Ridge, MS | 39455 | 601/769 |
| Wells Town, MS | 39455 | 601/769 |