10538 -- U.S. ZIP code Municipality (1990): LARCHMONT, New York All ZIPs for this municipality (1990): 10538 Population (2000): 16780 Housing Units (2000): 6459 Land area (2000): 3.380357 sq. miles (8.755085 sq. km) Water area (2000): 0.045286 sq. miles (0.117290 sq. km) Total area (2000): 3.425643 sq. miles (8.872375 sq. km) Located within: New York (NY) Location: 40.933089 N, 73.756157 W