31510 -- U.S. ZIP code Municipality (1990): ALMA, Georgia All ZIPs for this municipality (1990): 31510 Population (2000): 8878 Housing Units (2000): 3926 Land area (2000): 223.426282 sq. miles (578.671389 sq. km) Water area (2000): 0.845618 sq. miles (2.190141 sq. km) Total area (2000): 224.271900 sq. miles (580.861530 sq. km) Located within: Georgia (GA) Location: 31.551458 N, 82.446185 W