Allegheny County, Pennsylvania
county in southwestern Pennsylvania, United States
Allegheny County (/ælɪˈɡeɪni/) is a county in the southwest of the U.S. state of Pennsylvania. As of 2020 the population was 1,250,578.[1] The county seat is Pittsburgh.[2]
![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/commons/thumb/5/58/Flag_of_Allegheny_County%2C_Pennsylvania.svg/250px-Flag_of_Allegheny_County%2C_Pennsylvania.svg.png)
![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Seal_of_Allegheny_County%2C_Pennsylvania.svg/200px-Seal_of_Allegheny_County%2C_Pennsylvania.svg.png)
Allegheny was Pennsylvania's first to bear a Native American name, being named after the Allegheny River.
References
change- ↑ "QuickFacts: Allegheny County, Pennsylvania". United States Census Bureau. Retrieved August 18, 2023.
- ↑ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.