Lumberton is located in Robeson county North carolina with a geographic area of 17.7 square miles. The total population in Lumberton is 20,704 with 46.5% male and 53.5% female. Children under age 5 represent 8.1% of the population, under age 18 equal 27.6% of the population and over age 65 is 16.7% of the population. The median household income is $36,846, per capita income is $20,666. There are a total of 7,270 housing units with 47.7% owner occupied. Education includes 25.9% of residents that are high school graduates and 24.6% with a bachelor's degree or higher. The average temperature in Lumberton in the summer is 77 degrees, and in the winter 38 degrees.