Allegheny County, Pennsylvania
Allegheny County: County in the southwestern part of the U.S. state of Pennsylvania
About
Allegheny County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 1,223,348 and a population density of 634 people per km². After 10 years in 2020 county had an estimated population of 1,211,358 inhabitants. Its county seat is Pittsburgh. The county was created 236 years ago in 1788.
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Quick Facts about Allegheny County
Population : | 1,211,358 (2020) |
Country : | United States of America |
State : | Pennsylvania (United States) |
Different from : | Anderson County, Allen County, Anderson County, Allen County, Alleghany County, Anderson County, Allegany County, Anderson County, Allen Parish, Allegan County, Alleghany County, Allen County, Allen County, Allegany County, Anderson County |
Area : | 1929 km2 |
Official name : | Allegheny County |
Water as percent of area : | 1.9% |
Land as percent of area : | 98.1% |
Named for : | Allegheny River |
Altitude : | 961 feet / 293 meters |
Capital : | Pittsburgh |
Establishment : | September 09, 1788 |
Time Zone : | America/New_York |
Local time : | 03:44:56 (22nd February 2025) |
Density : | 628 Pop. per km² as of 2020 |
Population growth : | -0.99% (2010-2020) |
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Geography
Allegheny County is located at 40°28'8"N 79°58'52"W (40.4688300, -79.9811900). It has 4 neighbors: Armstrong County, Butler County, Washington County and Westmoreland County.
Allegheny County map
The largest city of Allegheny County is Pittsburgh with a population of 299,226. Other cities include, Penn Hills population 40,517, Municipality of Bethel Park population 32,345, Bethel Park population 32,118 and Mount Lebanon population 31,418. See all Allegheny County cities & populated places.
Allegheny County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Allegheny County.
City Name | Population | Title |
---|---|---|
Pittsburgh | 299,226 | The second most populous city in Pennsylvania and the center of the Pittsburgh metropolitan area. |
Penn Hills | 40,517 | A borough in Allegheny County, Pennsylvania. |
Bethel Park | 32,118 | Home rule municipality of Pennsylvania |
Mount Lebanon | 31,418 | Municipality in Pennsylvania |
Monroeville | 28,176 | City in Alabama, United States |
Plum | 26,993 | Borough of Pennsylvania |
Moon | 25,204 | Township in Allegheny County, Pennsylvania |
Unity | 21,600 | Township in Westmoreland County, Pennsylvania, United States |
Upper Saint Clair | 19,896 | Home rule municipality in Allegheny County |
West Mifflin | 19,588 | Borough of Pennsylvania |
McKeesport | 18,927 | City in Allegheny County, Pennsylvania, United States |
Wilkinsburg | 15,186 | Borough of Pennsylvania |
Franklin Park | 14,883 | Borough of Pennsylvania |
Cecil | 13,220 | Township in Washington County, Pennsylvania |
Elizabeth | 11,494 | Borough in Pennsylvania, United States |
Jefferson Hills | 11,136 | Borough of Pennsylvania |
- Official Website
Official website of Allegheny County
Allegheny County has 4 neighbours.
- Armstrong County county in Pennsylvania, United States
- Butler County county in Pennsylvania, United States of America
- Washington County county in Pennsylvania, United States
- Westmoreland County county in Pennsylvania, United States
Demographics
According to census records, the population of Allegheny County decreased by 0.99% in 10 years.
Year | Population | % Change | Method |
2010 | 1,223,348 | - | census |
2011 | 1,228,297 | 0.4% | estimation process |
2012 | 1,230,911 | 0.21% | estimation process |
2013 | 1,233,700 | 0.23% | estimation process |
2014 | 1,233,027 | -0.05% | estimation process |
2015 | 1,228,827 | -0.34% | estimation process |
2016 | 1,226,426 | -0.2% | estimation process |
2017 | 1,220,141 | -0.52% | estimation process |
2018 | 1,217,281 | -0.23% | estimation process |
2019 | 1,216,045 | -0.1% | estimation process |
2020 | 1,211,358 | -0.39% | estimation process |
People born in Allegheny County (38)
People born in Allegheny County, including horticulturist Alex Shigo, historian, toponymist, and novelist George R. Stewart, actor/film director Lois Weber, .
List
- Bunny Yeager (American photographer and model) she was born in 13/03/1929
- Alferd Packer (Union Army soldiers) he was born in 21/01/1842
- Sidney Rigdon (American Mormon leader) he was born in 19/02/1793
- William D. Boyce (Businessman and founder of Scouting in America) he was born in 16/06/1858
- Elijah Hise (American politician (1802-1867)) he was born in 04/07/1802
- Joseph M. Schmondiuk (Archbishop of the Ukrainian Catholic Church) he was born in 06/08/1912
- Philip Childs Keenan (American astronomer) he was born in 31/03/1908
- Michael Dietz (American actor) he was born in 10/02/1971
- Charlie Batch (former NFL quarterback) he was born in 05/12/1974
- Mary Ruefle (Poet, essayist, professor) she was born in 16/04/1952
- M. Graham Netting (American zoologist) he was born in 01/01/1904
- Terrell Anderson he was born in 29/11/1989
- Baptiste Manzini (American football player and coach (1920-2008)) he was born in 27/08/1920
- Charles Mertz Arbuthnot (physician and pharmacist in Kansas) he was born in 15/12/1852
- Edward Early (American politician) he was born in 02/10/1935
- Justin Kurpeikis (American football player) he was born in 17/07/1977
- James Y. McKee (Acting president of Penn State University) he was born in 20/06/1836
- Jim Callahan (American baseball player) he was born in 12/01/1881
Pennsylvania Other Counties (more counties)
County Name | Population | Title |
---|---|---|
Philadelphia County | 1,578,487 | County in Pennsylvania, United States |
Philadelphia | 1,578,487 | The sixth most populous city in the United States and the center of the Philadelphia metropolitan area. |
Montgomery County | 833,869 | County in Pennsylvania, United States |
Bucks County | 627,987 | County in Pennsylvania, United States |
Delaware County | 566,753 | County in Pennsylvania, United States |
Lancaster County | 546,192 | County in Pennsylvania, United States |
Chester County | 526,759 | County in Pennsylvania, United States |
York County | 450,448 | County in Maine, United States |
Berks County | 421,017 | County in Pennsylvania, United States |
Lehigh County | 370,802 | County in Pennsylvania, United States of America |
Westmoreland County | 347,087 | County in Pennsylvania, United States |
Luzerne County | 316,982 | County in Pennsylvania, United States |
Northampton County | 305,892 | County in Pennsylvania, United States |
Pittsburgh | 299,226 | The second most populous city in Pennsylvania and the center of the Pittsburgh metropolitan area. |
Dauphin County | 279,874 | County in Pennsylvania, United States |
Erie County | 268,426 | County in Pennsylvania, United States |