30507 -- U.S. ZIP code Municipality (1990): GAINESVILLE, Georgia All ZIPs for this municipality (1990): 30501 30504 30506 30507 Population (2000): 20744 Housing Units (2000): 6868 Land area (2000): 70.957725 sq. miles (183.779655 sq. km) Water area (2000): 0.096138 sq. miles (0.248996 sq. km) Total area (2000): 71.053863 sq. miles (184.028651 sq. km) Located within: Georgia (GA) Location: 34.253714 N, 83.773481 W