30292 -- U.S. ZIP code Municipality (1990): WILLIAMSON, Georgia All ZIPs for this municipality (1990): 30292 Population (2000): 4495 Housing Units (2000): 1620 Land area (2000): 56.397527 sq. miles (146.068918 sq. km) Water area (2000): 0.183667 sq. miles (0.475695 sq. km) Total area (2000): 56.581194 sq. miles (146.544613 sq. km) Located within: Georgia (GA) Location: 33.169646 N, 84.371688 W