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Interactive map of Allegheny County, Pennsylvania Allegheny County ( / ˌ æ l ɪ ˈ ɡ eɪ n i / 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 .
English: This is a locator map showing Allegheny County in Pennsylvania. For more information, see Commons:United States county locator maps. Date: 12 February 2006:
Parts of Lycoming County; Attached to Centre County until 1814 and to Lycoming County until 1826 for judicial and elective purposes. McKean was fully organized only in 1826. Thomas McKean, second Governor of Pennsylvania: 39,519: 984 sq mi (2,549 km 2) Mercer County: 085: Mercer: 1800: Parts of Allegheny County: Hugh Mercer, Revolutionary War ...
General Highway Map, Allegheny County (PDF) (Map) (2016 ed.). 1:65,000. Cartography by PennDOT Bureau of Planning and Research, Geographic Information Division, in cooperation with the Federal Highway Administration. Harrisburg, PA: Pennsylvania Department of Transportation
Allegheny City was a municipality that existed in the U.S. state of Pennsylvania from 1788 until it was annexed by Pittsburgh in 1907. It was located north across the Allegheny River from downtown Pittsburgh, with its southwest border formed by the Ohio River, and is known today as the North Side.
A map of Allegheny County showing McKeesport, Pennsylvania highlighted on the map. Date: 10 October 2006: Source: Source image taken from the United States Census Bureau's website pa_cosub.pdf. Image was modified by Ram-Man. Author (c)2006 Derek Ramsey (from U.S. Census Bureau source) Permission (Reusing this file)
Clinton is a census-designated place in Findlay Township, Allegheny County, Pennsylvania, United States. It had a population of 905 at the 2020 census. [2] The community is located adjacent to the Pittsburgh International Airport within the Pittsburgh metropolitan area.
This is intended to be a complete list of the properties and districts on National Register of Historic Places in Allegheny County, Pennsylvania, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map. [1]