Allegheny County

Steelworker on River

Steelworker on River

(Photo courtesy of the  Library of Congress, Office of War Information, LC-USF33-002840-M2 )


(Source: U.S. Census bureau, 2010)

Population: 1,223,348

Primary ethnic makeup:  Irish, German, African-American, Eastern European, Italian

Industries:  Steel, manufacturing, coal, retail

Major cities:  Pittsburgh

County Records

Allegheny County was formed from Westmoreland and Washington Counties in 1788

Land Records – Deeds from 1789 – present, Department of Real Estate – 542 Forbes Avenue, Room 101, (412) 350-4210

Birth and Death Records – 1870 – Present – Carnegie Library of Pittsburgh, Pennsylvania Department

Marriages – (Pittsburgh Only) – 1870 – 1879 – Orphan’s Court – 414 Grant Street, Pittsburgh, (412) 350-4180   


Allegheny City Society

Allegheny Foothills Historical Society

Carnegie Library, Pennsylvania Department

Heinz History Center

Historic Pittsburgh, (Project of the University of Pittsburgh)

Jewish Genealogical Society of Greater Pittsburgh

Mifflin Township Historical Society

North Hills Genealogists

PA GenWeb: Allegheny County

Rivers of Steel National Heritage Area [Museum and Archives]

Sewickley Valley Historical Society

Soldiers and Sailors Hall and Museum

Tarentum Genealogical Society


Pittsburgh City Directories

Allegheny County Cemetery Records

Allegheny County Government Website

Don’s List – Pittsburgh – Allegheny County and Much More

Allegheny County Map

Allegheny County Map

(Allegheny Township Map courtesy of Kristin Bryson and Bare Roots Publishing)

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