Union County, New Jersey
Union County is a county in New Jersey with an estimated population of 572,726 in 2023. 13 cities, towns and Census places in it are indexed here.
Largest places in Union County
Elizabeth 135,829Plainfield 54,670Linden 43,950Westfield 30,559Rahway 29,813Summit 22,344Roselle 22,342Roselle Park 13,932New Providence 13,488Kenilworth 8,259Fanwood 7,655Mountainside 6,924Garwood 5,161
About Union County
Union County is one of the counties of New Jersey. County governments in New Jersey handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.