11050 -- U.S. ZIP code Municipality (1990): PORT WASHINGTON, New York All ZIPs for this municipality (1990): 11050 Population (2000): 28545 Housing Units (2000): 10708 Land area (2000): 9.882230 sq. miles (25.594858 sq. km) Water area (2000): 0.005732 sq. miles (0.014845 sq. km) Total area (2000): 9.887962 sq. miles (25.609703 sq. km) Located within: New York (NY) Location: 40.833246 N, 73.693095 W