- Municipalities
- Aspinwall Boro
- Braddock Boro
- Dormont Boro
- Elizabeth Boro
- Fox Chapel Boro
- Franklin Park Boro
- Harrison Twp
- Pittsburgh City
- Ross Twp
- Sewickley Boro
- Thornburg Boro
- Aleppo Twp
- Avalon Boro
- Baldwin Boro
- Baldwin Twp
- Bell Acres Boro
- Bellevue Boro
- Ben Avon Boro
- Ben Avon Heights Boro
- Bethel Park Boro
- Blawnox Boro
- Brackenridge Boro
- Braddock Hills Boro
- Bradfordwoods Boro
- Brentwood Boro
- Bridgeville Boro
- Carnegie Boro
- Castle Shannon Boro
- Chalfant Boro
- Cheswick Boro
- Churchill Boro
- Clairton City
- Collier Twp
- Coraopolis Boro
- Crafton Boro
- Crescent Twp
- Dravosburg Boro
- Duquesne City
- East Deer Twp
- East McKeesport Boro
- East Pittsburgh Boro
- Edgewood Boro
- Edgeworth Boro
- Elizabeth Twp
- Emsworth Boro
- Etna Boro
- Fawn Twp
- Findlay Twp
- Forest Hills Boro
- Foward Twp
- Frazer Twp
- Glassport Boro
- Glenfield Boro
- Green Tree Boro
- Hampton Twp
- Harmar Twp
- Haysville Boro
- Heidelberg Boro
- Homestead Boro
- Indiana Twp
- Ingram Boro
- Jefferson Hills Boro
- Kennedy Twp
- Kilbuck Twp
- Leet Twp
- Leetsdale Boro
- Liberty Boro
- Lincoln Boro
- Marshall Twp
- McCandless Twp
- McDonald Boro
- McKees Rocks Boro
- McKeesport City
- Millvale Boro
- Monroeville Boro
- Moon Twp
- Mount Lebanon Twp
- Mount Oliver Boro
- Munhall Boro
- Neville Twp
- North Braddock Boro
- North Fayette Twp
- North Versailles Twp
- Oakdale Boro
- Oakmont Boro
- OHara Twp
- Ohio Twp
- Osborne Boro
- Penn Hills Twp
- Pennsbury Vlg Boro
- Pine Twp
- Pitcairn Boro
- Pleasant Hills Boro
- Plum Boro
- Port Vue Boro
- Rankin Boro
- Reserve Twp
- Richland Twp
- Robinson Twp
- Rosslyn Farms Boro
- Scott Twp
- Sewickley Heights Boro
- Sewickley Hills Boro
- Shaler Twp
- Sharpsburg Boro
- South Fayette Twp
- South Park Twp
- South Versailles Twp
- Springdale Boro
- Springdale Twp
- Stowe Twp
- Swissvale Boro
- Tarentum Boro
- Trafford Boro
- Turtle Creek Boro
- Upper St Clair Twp
- Verona Boro
- Versailles Boro
- Wall Boro
- West Deer Twp
- West Elizabeth Boro
- West Homestead Boro
- West Mifflin Boro
- West View Boro
- Whitaker Boro
- White Oak Boro
- Whitehall Boro
- Wilkins Twp
- Wilkinsburg Boro
- Wilmerdig Boro
- Wilmerding Boro
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County government offices are located at 436 Grant Street; Pittsburgh, PA 15219; Phone: (412) 350-5300.
Beginnings [1]
Created on September 24, 1788 from parts of Westmoreland and Washington Counties, and named for the Allegheny River. Pittsburgh, the county seat, was named by General John Forbes in November 1758 in honor of William Pitt, a British statesman. It was incorporated as a borough on April 22, 1794, and as a city on March 18, 1816.
With 130 municipalities, Allegheny has more than any other Pennsylvania county.
Named from Delaware Indian word signifying "Fair Water." Surface undulating, many elevations being precipitous. Is the center of one of the richest bituminous coal and natural gas districts in the world. Oil fields lie mainly in basins of Allegheny and Ohio Rivers. Staple manufactures are iron, steel and glass. The history of Allegheny County presents a greater variety of startling incidents than almost any other portion of the state. Mound builders were primeval inhabitants, site of ancient fortifications are on Chartier's Creek, eight miles from Pittsburgh, county seat, second city in size in the state, on site of Shannopin's Town, chief of about twenty families of Delawares; he attended councils with the Governor; his name is signed on several state archives. By it ran the main Indian path from east to west.
- Archambault, A. Margaretta, ed., A Guide Book of Art, Architecture, and Historic Interests in Pennsylvania, John C. Winston Company, Philadelphia, 1924
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