30655 -- U.S. ZIP code Municipality (1990): MONROE, Georgia All ZIPs for this municipality (1990): 30655 Population (2000): 17481 Housing Units (2000): 6965 Land area (2000): 101.379193 sq. miles (262.570893 sq. km) Water area (2000): 0.357817 sq. miles (0.926743 sq. km) Total area (2000): 101.737010 sq. miles (263.497636 sq. km) Located within: Georgia (GA) Location: 33.786041 N, 83.699011 W