Lamar County, Mississippi

Lamar County
Lamar County Courthouse in Purvis
Location within the U.S. state of Mississippi
Mississippi's location within the U.S.
Coordinates: 31°13′N 89°31′W / 31.21°N 89.51°W / 31.21; -89.51
Country United States
State Mississippi
Founded1904
Named afterLucius Quintus Cincinnatus Lamar
SeatPurvis
Largest communityWest Hattiesburg
Area
  Total
500 sq mi (1,000 km2)
  Land497 sq mi (1,290 km2)
  Water3.4 sq mi (9 km2)  0.7%
Population
 (2020)
  Total
64,222
  Density130/sq mi (50/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.lamarcountyms.gov/11/index.php

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.