12538 -- U.S. ZIP code Municipality (1990): HYDE PARK, New York All ZIPs for this municipality (1990): 12538 Population (2000): 12653 Housing Units (2000): 5047 Land area (2000): 24.899467 sq. miles (64.489320 sq. km) Water area (2000): 0.095236 sq. miles (0.246661 sq. km) Total area (2000): 24.994703 sq. miles (64.735981 sq. km) Located within: New York (NY) Location: 41.779541 N, 73.901552 W