Dumont, NJ -- U.S. borough in New Jersey Population (2000): 17503 Housing Units (2000): 6465 Land area (2000): 1.986138 sq. miles (5.144074 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.986138 sq. miles (5.144074 sq. km) FIPS code: 18400 Located within: New Jersey (NJ), FIPS 34 Location: 40.945173 N, 73.993425 W ZIP Codes (1990): 07628 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dumont, NJ Dumont