30224 -- U.S. ZIP code Population (2000): 21355 Housing Units (2000): 8584 Land area (2000): 69.925449 sq. miles (181.106075 sq. km) Water area (2000): 0.459004 sq. miles (1.188814 sq. km) Total area (2000): 70.384453 sq. miles (182.294889 sq. km) Located within: Georgia (GA) Location: 33.215454 N, 84.254273 W