Butler, NJ -- U.S. borough in New Jersey Population (2000): 7420 Housing Units (2000): 2923 Land area (2000): 2.079090 sq. miles (5.384817 sq. km) Water area (2000): 0.015078 sq. miles (0.039051 sq. km) Total area (2000): 2.094168 sq. miles (5.423868 sq. km) FIPS code: 09040 Located within: New Jersey (NJ), FIPS 34 Location: 40.999497 N, 74.346326 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Butler, NJ Butler