Back مقاطعة أليني (بنسيلفانيا) Arabic Alleqeyni (dairə, Pensilvaniya) Azerbaijani Allegheny County, Pennsylvania BAR Алегени (окръг, Пенсилвания) Bulgarian অ্যলেঘেনি কাউন্টি, পেনসিলভানিয়া BPY Allegheny Gông (Pennsylvania) CDO Аллегейни (гуо, Пенсильвани) CE Allegheny County CEB Allegheny County, Pennsylvania Welsh Allegheny County German
Allegheny County | |
|---|---|
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 Flag  Seal | |
 Location within the U.S. state of Pennsylvania | |
 Pennsylvania's location within the U.S. | |
| Coordinates: 40°26′08″N 80°01′28″W / 40.4356°N 80.0244°W | |
| Country |  United States |
| State |  Pennsylvania |
| Founded | September 24, 1788 |
| Named for | Allegheny River |
| Seat | Pittsburgh |
| Largest city | Pittsburgh |
| Area | |
| • Total | 745 sq mi (1,930 km2) |
| • Land | 730 sq mi (1,900 km2) |
| • Water | 14 sq mi (40 km2) 1.9% |
| Population (2020) | |
| • Total | 1,250,578  |
| • Density | 1,700/sq mi (700/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional districts | 12th, 17th |
| Website | www |
| Designated | December 30, 1982[1] |
Allegheny County (/ˌælɪˈɡeɪni/ AL-ig-AY-nee) is a county in Pennsylvania, United States. As of the 2020 census, the population was 1,250,578, making it the state's second-most populous county, after Philadelphia County. Its county seat and most populous city is Pittsburgh, Pennsylvania's second most populous city.[2] The county is part of the Greater Pittsburgh region of the state[a], and is the center of the Pittsburgh media market.
Allegheny was the first county in Pennsylvania to be given a Native American name. It was named after the Lenape word for the Allegheny River. The meaning of "Allegheny" is uncertain. It is usually said to mean "fine river". Stewart says that the name may come from a Lenape account of an ancient mythical tribe called "Allegewi", who lived along the river before being taken over by the Lenape.[3]
- ^ "PHMC Historical Markers Search". Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Archived from the original (Searchable database) on March 21, 2016. Retrieved January 25, 2014.
- ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- ^ Stewart, George R. (1967) [1945]. Names on the Land: A Historical Account of Place-Naming in the United States (Sentry edition (3rd) ed.). Houghton Mifflin. pp. 8, 193. ISBN 1-59017-273-6.
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