Union City, NJ -- U.S. city in New Jersey Population (2000): 67088 Housing Units (2000): 23741 Land area (2000): 1.266341 sq. miles (3.279807 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.266341 sq. miles (3.279807 sq. km) FIPS code: 74630 Located within: New Jersey (NJ), FIPS 34 Location: 40.767651 N, 74.031833 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Union City, NJ Union City