Union County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 44,947. 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.
Jackson Township is a township in Dauphin County, Pennsylvania. The population was 1,830 at the time of the 2020 census, down from 1,941 at the time of the 2010 census.
Middletown is a borough in Dauphin County, Pennsylvania, United States, on the Susquehanna River, 10 miles (16 km) southeast of Harrisburg. As of the 2020 census it had a population of 9,550. It is part of the Harrisburg–Carlisle Metropolitan Statistical Area.
Susquehanna Township is a township in Dauphin County, Pennsylvania. The population was 26,736 at the time of the2020 census. This represents a 9.8% increase from the 2000 census count of 21,895. Susquehanna Township has the postal ZIP codes 17109 and 17110, which maintain the Harrisburg place name designation. The township is a suburb of Harrisburg and is connected to Marysville by the Rockville Bridge, the world's longest stone-arch rail bridge at the time of its completion.
Jackson Township is a township in Huntingdon County, Pennsylvania, United States. The population was 865 at the 2020 census. Greenwood Furnace State Park is a Pennsylvania state park in Jackson Township.
Mapleton is a borough in Huntingdon County, Pennsylvania, United States. The population was 441 at the 2010 census. It is located on the Juniata River, which is a tributary of the Susquehanna River.
Mill Creek is a borough in Huntingdon County, Pennsylvania, United States. The population was 328 at the 2010 census.
Gaskill Township is a township in Jefferson County, Pennsylvania, United States. The population was 675 at the 2020 census. It was named for Charles C. Gaskill, agent of the Holland Land Company.
Lower Mahanoy Township is a township in Northumberland County, Pennsylvania, United States. The population at the 2010 Census was 1,709, up from 1,586 at the 2000 census.
Union Township is a township in Snyder County, Pennsylvania, United States. The population was 1,491 at the 2020 census.
Hartley Township is a township in Union County, Pennsylvania, United States. The population was 1,725 at the 2020 census.
Long Branch is a borough in Washington County, Pennsylvania, United States. The population was 421 at the 2020 census.
Peru is an unincorporated community in Benner Township, Centre County, Pennsylvania, United States. Peru is alternatively known unofficially as Lauvertown. Peru is located northeast of State College and southwest of Pleasant Gap along Pennsylvania Route 26 near the Pennsylvania State Correctional Institution at Rockview.
The Mifflinburg Area School District is a small, rural, public school district serving western Union County, Pennsylvania. Centered on the borough of Mifflinburg, it also serves Buffalo Township, New Berlin, Limestone Township, West Buffalo Township, Lewis Township, Hartleton, and Hartley Township. Mifflinburg Area School District encompasses approximately 217 square miles (560 km2). According to 2000 United States Census data, the district served a resident population of 17,867. By 2010, Mifflinburg Area School District's population declined to 16,366 people. The educational attainment levels for the Mifflinburg Area School District population were 81.5% high school graduates and 17.5% college graduates. The region has a large Amish community who do not attend school past 8th grade. Most Amish children attend private schools operated by the amish community, rather than the local public schools. The district is one of the 500 public school districts of Pennsylvania and one of four full or partial public school districts operating in Union County.
Idaville is a census-designated place in Huntington Township, Adams County, Pennsylvania, United States. As of the 2010 census its population was 177. Idaville is served by the Bermudian Springs School District.
Atkinson Mills is a census-designated place located in Wayne Township, Mifflin County in the state of Pennsylvania. It is located along U.S. Route 522 in southern Mifflin County, between the boroughs of Mount Union and McVeytown. As of the 2010 census the population was 174 residents.
Cedar Crest is a census-designated place located in Wayne Township, Mifflin County in the state of Pennsylvania. It is located very close to the borough of Mount Union, along US 22. As of the 2010 census the population was 195 residents.
Granville is a census-designated place located in Granville Township, Mifflin County in the state of Pennsylvania. It is located near the Juniata River in south-central Mifflin County. As of the 2010 census the population was 440 residents.
Longfellow is a census-designated place located in Bratton Township, Mifflin County in the state of Pennsylvania. It is located along Pennsylvania Route 103 in southern Mifflin County. As of the 2010 census the population was 215 residents.
Elrama is a census-designated place located in Union Township, Washington County in the state of Pennsylvania. The community is located in far eastern tip of Union Township in Washington County, near the Monongahela River, along Pennsylvania Route 837. As of the 2010 census the population was 307 residents.
