Raritan, NJ -- U.S. borough in New Jersey Population (2000): 6338 Housing Units (2000): 2644 Land area (2000): 2.035431 sq. miles (5.271743 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.035431 sq. miles (5.271743 sq. km) FIPS code: 61980 Located within: New Jersey (NJ), FIPS 34 Location: 40.571302 N, 74.637405 W ZIP Codes (1990): 08869 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Raritan, NJ Raritan