High Quality Content by WIKIPEDIA articles! Lumberton is a city in Robeson County, North Carolina, United States. The population was 20,795 at the 2000 census. It is the county seat of Robeson County. Lumberton, located in southern North Carolina`s Inner Banks region, is located on the Lumber River. Founded in 1787 by John Willis, an officer in the American Revolution, Lumberton was originally a shipping point for lumber used by the Navy, which was sent downriver to Georgetown, South Carolina. Most of the town`s growth, however, began shortly after World War II.