Union County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 42,681. Its county seat is Lewisburg. The county was created on March 22, 1813, from part of Northumberland County. Its name is an allusion to... Wikipedia
Cities: Lewisburg, Mifflinburg, New Berlin, and more
Population: 42,744 (2022)
County seat: Lewisburg
Area: 318 mi²
Congressional district: 12th
Founded: March 22, 1813
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