30650 -- U.S. ZIP code Municipality (1990): MADISON, Georgia All ZIPs for this municipality (1990): 30650 Population (2000): 10309 Housing Units (2000): 3979 Land area (2000): 216.558201 sq. miles (560.883141 sq. km) Water area (2000): 0.631502 sq. miles (1.635582 sq. km) Total area (2000): 217.189703 sq. miles (562.518723 sq. km) Located within: Georgia (GA) Location: 33.588436 N, 83.479368 W