Shikellamy State Park's overlook is in Union County.

Union has a humid continental climate ( Dfa/ Dfb) and average temperatures in Lewisburg range from 27.2 ☏ in January to 72.7 ☏ in July, while in Hartleton they range from 26.4 ☏ in January to 72.1 ☏ in July. It is the fourth-smallest county in Pennsylvania by area. Census Bureau, the county has a total area of 318 square miles (820 km 2), of which 316 square miles (820 km 2) is land and 1.8 square miles (4.7 km 2) (0.6%) is water. Union County comprises the Lewisburg, PA Micropolitan Statistical Area, which is also included in the Bloomsburg- Berwick- Sunbury, PA Combined Statistical Area.Īccording to the U.S. Lewisburg became county seat in 1855 and has remained so since.

Mifflinburg was established by legislation as the first county seat until it was moved to New Berlin in 1815.

Its name is an allusion to the federal Union.

The county was created on March 22, 1813, from part of Northumberland County. As of the 2020 census, the population was 42,681. Union County is a county in the Commonwealth of Pennsylvania.

Union township union county pa