21787 -- U.S. ZIP code Municipality (1990): TANEYTOWN, Maryland All ZIPs for this municipality (1990): 21787 Population (2000): 9063 Housing Units (2000): 3355 Land area (2000): 59.115218 sq. miles (153.107704 sq. km) Water area (2000): 0.023095 sq. miles (0.059816 sq. km) Total area (2000): 59.138313 sq. miles (153.167520 sq. km) Located within: Maryland (MD) Location: 39.665171 N, 77.172640 W