Lumberton is a city in Lamar and Pearl River counties, Mississippi, United States. It is part of the Hattiesburg, Mississippi Metropolitan Statistical Area. As of the 2020 census, Lumberton had a population of 1,617.
The city was named for the local lumber industry.
Lumberton is located at (31.003888, -89.453544). Most of the city is in Lamar County, with a small portion extending east into adjacent Pearl River County. In the 2000 census, 2,200 of the city's 2,228 residents (98.7%) lived in Lamar County and 28 (1.3%) in Pearl River County.
According to the United States Census Bureau, the city has a total area of 7.3 square miles (18.9 km<sup>2</sup>), of which 7.3 square miles (18.8 km<sup>2</sup>) is land and 0.04 square mile (0.1 km<sup>2</sup>) (0.27%) is water.
As of the 2020 United States census, there were 1,617 people, 725 households, and 435 families residing in the city.
In 2025, Democrat James H. Sandifer defeated incumbent mayor Quincy Rogers with over 80% of the vote.
The City of Lumberton is served by the Lamar County School District. The Lumberton Public School District consolidated into it as of 2019.
Lumberton includes Lumberton Elementary School, Lumberton Middle School and Lumberton High School.