Andover, NJ -- U.S. borough in New Jersey Population (2000): 658 Housing Units (2000): 273 Land area (2000): 1.456104 sq. miles (3.771293 sq. km) Water area (2000): 0.012124 sq. miles (0.031400 sq. km) Total area (2000): 1.468228 sq. miles (3.802693 sq. km) FIPS code: 01330 Located within: New Jersey (NJ), FIPS 34 Location: 40.985997 N, 74.742015 W ZIP Codes (1990): 07821 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Andover, NJ Andover