31313 -- U.S. ZIP code Municipality (1990): HINESVILLE, Georgia All ZIPs for this municipality (1990): 31313 Population (2000): 35885 Housing Units (2000): 13980 Land area (2000): 95.271746 sq. miles (246.752678 sq. km) Water area (2000): 0.236115 sq. miles (0.611535 sq. km) Total area (2000): 95.507861 sq. miles (247.364213 sq. km) Located within: Georgia (GA) Location: 31.828575 N, 81.616173 W