Union County, Pennsylvania

Union County is a county in Pennsylvania with an estimated population of 42,042 in 2023. 4 cities, towns and Census places in it are indexed here.

Largest places in Union County

About Union County

Union County is one of the counties of Pennsylvania. County governments in Pennsylvania 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.