30135 -- U.S. ZIP code Municipality (1990): DOUGLASVILLE, Georgia All ZIPs for this municipality (1990): 30134 30135 Population (2000): 43485 Housing Units (2000): 15469 Land area (2000): 84.102322 sq. miles (217.824004 sq. km) Water area (2000): 0.187215 sq. miles (0.484885 sq. km) Total area (2000): 84.289537 sq. miles (218.308889 sq. km) Located within: Georgia (GA) Location: 33.701554 N, 84.737567 W