Magnolia, NJ -- U.S. borough in New Jersey Population (2000): 4409 Housing Units (2000): 1836 Land area (2000): 0.970438 sq. miles (2.513424 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.970438 sq. miles (2.513424 sq. km) FIPS code: 42630 Located within: New Jersey (NJ), FIPS 34 Location: 39.854880 N, 75.035546 W ZIP Codes (1990): 08049 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Magnolia, NJ Magnolia