31088 -- U.S. ZIP code Municipality (1990): WARNER ROBINS, Georgia All ZIPs for this municipality (1990): 31088 31093 Population (2000): 38066 Housing Units (2000): 15596 Land area (2000): 31.172604 sq. miles (80.736669 sq. km) Water area (2000): 0.068802 sq. miles (0.178197 sq. km) Total area (2000): 31.241406 sq. miles (80.914866 sq. km) Located within: Georgia (GA) Location: 32.594698 N, 83.648734 W