Dover, NJ -- U.S. town in New Jersey Population (2000): 18188 Housing Units (2000): 5568 Land area (2000): 2.679371 sq. miles (6.939538 sq. km) Water area (2000): 0.025019 sq. miles (0.064800 sq. km) Total area (2000): 2.704390 sq. miles (7.004338 sq. km) FIPS code: 18070 Located within: New Jersey (NJ), FIPS 34 Location: 40.885899 N, 74.558241 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dover, NJ Dover