35223 -- U.S. ZIP code Municipality (1990): MOUNTAIN BROOK, Alabama All ZIPs for this municipality (1990): 35223 Population (2000): 11258 Housing Units (2000): 4596 Land area (2000): 8.917212 sq. miles (23.095472 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 8.917212 sq. miles (23.095472 sq. km) Located within: Alabama (AL) Location: 33.488355 N, 86.734029 W