13634 -- U.S. ZIP code Municipality (1990): DEXTER, New York All ZIPs for this municipality (1990): 13634 Population (2000): 3825 Housing Units (2000): 2070 Land area (2000): 46.866535 sq. miles (121.383762 sq. km) Water area (2000): 0.069949 sq. miles (0.181167 sq. km) Total area (2000): 46.936484 sq. miles (121.564929 sq. km) Located within: New York (NY) Location: 44.015332 N, 76.057116 W