31220 -- U.S. ZIP code Population (2000): 11279 Housing Units (2000): 4526 Land area (2000): 40.437633 sq. miles (104.732983 sq. km) Water area (2000): 0.378986 sq. miles (0.981568 sq. km) Total area (2000): 40.816619 sq. miles (105.714551 sq. km) Located within: Georgia (GA) Location: 32.862246 N, 83.786653 W