Union City's Description
Union City is a city in Hudson County, New Jersey, United States. According to the United States 2000 Census, the city had a total population of 67,088, living on a land area of 3.28 km² (1.27 sq mi). It is the most densely populated city in the United States, with a density of 52,977.8 per square mile.3[5]
Union City was incorporated as a city by an Act of the New Jersey Legislature on January 1, 1925, replacing both Union Hill and West Hoboken Township.[6]