31204 -- U.S. ZIP code Municipality (1990): MACON, Georgia All ZIPs for this municipality (1990): 31204 31210 31211 Population (2000): 33314 Housing Units (2000): 16019 Land area (2000): 14.985505 sq. miles (38.812279 sq. km) Water area (2000): 0.044147 sq. miles (0.114339 sq. km) Total area (2000): 15.029652 sq. miles (38.926618 sq. km) Located within: Georgia (GA) Location: 32.844872 N, 83.671193 W