31906 -- U.S. ZIP code Municipality (1990): COLUMBUS, Georgia All ZIPs for this municipality (1990): 31901 31903 31904 31906 31907 31909 Population (2000): 24380 Housing Units (2000): 11561 Land area (2000): 7.141604 sq. miles (18.496669 sq. km) Water area (2000): 0.002536 sq. miles (0.006568 sq. km) Total area (2000): 7.144140 sq. miles (18.503237 sq. km) Located within: Georgia (GA) Location: 32.468442 N, 84.951282 W