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Of New Jersey's 21 counties, Union County ranks 6th in population and 20th in size. It is the third most densely populated county in New Jersey.

Union County is a county located in the U.S. state of New Jersey. As of the 2000 Census, the population is 522,541. It is part of the New York Metropolitan Area. Its county seat is Elizabeth6. Union County ranks 92nd among the highest-income counties in the United States with a per capita income of $26,992. With more than 5,000 persons per square mile on average, Union County is one of the most densely populated counties in America.

Learn more about this county.

County of Union, NJ Chamber of Commerce

County of Union, NJ newspaper

County of Union, NJ official site

State of New Jersey official site