City Detail

Union City is a city in the northern part of Hudson County, New Jersey, United States. According to the 2020 United States Census the city had a total population of 68,589, reflecting an increase of 2,134 (+3.2%) from the 66,455 counted in the 2010 Census. In 2010, the city was ranked the 540th-most-populous in the country. As of the 2010 Census, among cities with a population of more than 50,000, it was the most densely populated city in the United States, with a density of 54,138 per square mile.Union City was incorporated as a city by an act of the New Jersey Legislature on June 1, 1925, with the merger of Union Hill and West Hoboken Township. The city's name references the merger of those two municipalities.Two major waves of immigration, first of German speakers and then of Spanish speakers, greatly influenced the development and character of Union City.