31303 -- U.S. ZIP code Municipality (1990): CLYO, Georgia All ZIPs for this municipality (1990): 31303 Population (2000): 2034 Housing Units (2000): 814 Land area (2000): 78.570103 sq. miles (203.495623 sq. km) Water area (2000): 0.458831 sq. miles (1.188366 sq. km) Total area (2000): 79.028934 sq. miles (204.683989 sq. km) Located within: Georgia (GA) Location: 32.508239 N, 81.312801 W