35677 -- U.S. ZIP code Municipality (1990): WATERLOO, Alabama All ZIPs for this municipality (1990): 35677 Population (2000): 1839 Housing Units (2000): 942 Land area (2000): 108.844069 sq. miles (281.904833 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 108.844069 sq. miles (281.904833 sq. km) Located within: Alabama (AL) Location: 34.950648 N, 88.026036 W