31211 -- U.S. ZIP code Municipality (1990): MACON, Georgia All ZIPs for this municipality (1990): 31204 31210 31211 Population (2000): 15876 Housing Units (2000): 7456 Land area (2000): 56.065957 sq. miles (145.210156 sq. km) Water area (2000): 0.029406 sq. miles (0.076162 sq. km) Total area (2000): 56.095363 sq. miles (145.286318 sq. km) Located within: Georgia (GA) Location: 32.878304 N, 83.599635 W