Lamar County Post Offices

220 S 40th Ave
Hattiesburg, Mississippi 39402

7877 U S Highway 11
Lumberton, Mississippi 39455

5851 Us Highway 11
Purvis, Mississippi 39475

4862 Highway 589
Sumrall, Mississippi 39482

Lamar County

There are 4 US Post Offices in Lamar County serving a total of 69,184 residents equating to 17,296 residents per post office. It's estimated that approximately 110,425 packages are handled across the 4 county post offices annually. Lamar County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 55,658. Its county seat is Purvis. Named for the post-Civil War Mississippi statesman Lucius Quintus Cincinnatus Lamar, the county was carved out of Marion County to the west in 1904. Lamar County is part of the Hattiesburg, MS Metropolitan Statistical Area. It is largely a rural county, except for its northeast quarter."