Union is a city located in the New Jersey region of the United States. During the most recent census, Union had a population of 56,771. Union is the 19th most poplulated city in the New Jersey region, the 689th most populated city in the United States and the 6,225th most populated city in the world. Union is in the America/New York timezone which is 4 hours behind UTC. Union adjusts the hour with daylight savings time during the winter months.
Union is located at sea level (30 meters / 98 feet). The closest cities to Union are Hillside (2.8 km / 1.8 miles), Kenilworth (3.3 km / 2.1 miles), Roselle Park (3.7 km / 2.3 miles), Roselle (3.7 km / 2.3 miles) and Maplewood (3.8 km / 2.4 miles)