30523 -- U.S. ZIP code Municipality (1990): CLARKESVILLE, Georgia All ZIPs for this municipality (1990): 30523 Population (2000): 10801 Housing Units (2000): 5386 Land area (2000): 173.306825 sq. miles (448.862598 sq. km) Water area (2000): 0.316202 sq. miles (0.818959 sq. km) Total area (2000): 173.623027 sq. miles (449.681557 sq. km) Located within: Georgia (GA) Location: 34.700311 N, 83.518790 W