Lumberton is a city in Lamar and Pearl River counties, Mississippi, United States. It is part of the Hattiesburg, Mississippi Metropolitan Statistical Area. The population was 2,086 at the 2010 census.

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.