Lumberton, city (1990 pop. 18,601), seat of Robeson co., S N.C., on the Lumber River; founded 1787, inc. 1852. It is in an agricultural area, with tobacco, grains, soybeans, and livestock. Manufactures include transformers, textiles and clothing, sheet metal, athletic shoes, loudspeakers, and boxes. Nearby Pembroke is a center for the Lumbee tribe and the seat of Pembroke State Univ.