11726 -- U.S. ZIP code Municipality (1990): COPIAGUE, New York All ZIPs for this municipality (1990): 11726 Population (2000): 17737 Housing Units (2000): 5654 Land area (2000): 2.423967 sq. miles (6.278045 sq. km) Water area (2000): 0.002410 sq. miles (0.006243 sq. km) Total area (2000): 2.426377 sq. miles (6.284288 sq. km) Located within: New York (NY) Location: 40.680892 N, 73.396093 W