Lamar County
Also known as Lamar County, Mississippi, Lamar County, MS
county in Mississippi, United States
Key facts
- Country
- United States
- State
- Mississippi
- Named after
- Lucius Quintus Cincinnatus Lamar
- Seat
- Purvis
- Largest community
- West Hattiesburg
- Total
- 500 sq mi (1,300 km )
- Land
- 497 sq mi (1,290 km )
- Water
- 3.4 sq mi (8.8 km ) 0.7%
- Estimate 2025
- 67,403
- Density
- 129/sq mi (49.9/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
Article
Lamar County is a county located in the U.S. state of Mississippi. As of the 2020 census, the population was 64,222. Its county seat is Purvis. Named for Confederate Lucius Quintus Cincinnatus Lamar, the county was carved out of Marion County to the west in 1904.
Lamar County is part of the Hattiesburg metropolitan area. It is largely a rural county, except for its northeast quarter.