File:Old_Union_County_Courthouse_(New_Berlin,_Pennsylvania)_3.jpg · Wikimedia Commons · See Wikimedia Commons
Union County
Sign in to saveAlso known as Union County, Pennsylvania, Union County, PA
county in Pennsylvania, United States
Key facts
- Country
- United States
- State
- Pennsylvania
- Founded
- March 22, 1813
- Seat
- Lewisburg
- Largest borough
- Lewisburg
- Total
- 318 sq mi (820 km )
- Land
- 316 sq mi (820 km )
- Water
- 1.8 sq mi (4.7 km ) 0.6%
- Estimate 2025
- 42,313
- Density
- 142/sq mi (55/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
- Congressional district
- 15th
- Website
- www .unioncountypa .org
via Wikipedia infobox
Wikidata facts
- Population
- 42681
- Area
- 821
- Official website
- www.unionco.org
- Image
- Old Union County Courthouse (New Berlin, Pennsylvania) 3.jpg
- Households
- 14762
Show 5 more facts
- Commons category
- Union County, Pennsylvania
- inception
- 1813-03-22
- water as percent of area
- 0.6
- native label
- Union County
- per capita income
- 28884
Sources (9)
via Wikidata · CC0
~10 min read
Article
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 the federal Union. Mifflinburg was established by legislation as the first county seat until it was moved to New Berlin in 1815. Lewisburg became county seat in 1855 and has remained so since. Union County comprises the Lewisburg, PA Micropolitan Statistical Area, which is also included in the Bloomsburg-Berwick-Sunbury, PA Combined Statistical Area. The county is part of the Central Pennsylvania region of the state.
Geography