Allegheny County, Pennsylvania
county in southwestern Pennsylvania, United States From Wikipedia, the free encyclopedia
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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]
Allegheny was Pennsylvania's first to bear a Native American name, being named after the Allegheny River.
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