31768 -- U.S. ZIP code Municipality (1990): MOULTRIE, Georgia All ZIPs for this municipality (1990): 31768 Population (2000): 32226 Housing Units (2000): 13548 Land area (2000): 287.316022 sq. miles (744.145050 sq. km) Water area (2000): 2.395199 sq. miles (6.203536 sq. km) Total area (2000): 289.711221 sq. miles (750.348586 sq. km) Located within: Georgia (GA) Location: 31.165358 N, 83.771723 W