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Allegheny County, Pennsylvania
Genealogy, History & Facts

Allegheny County, Pennsylvania Facts

When was Allegheny County, PA Created?
Allegheny County was established on September 24, 1788, from Washington County and Westmoreland County.

What is the County Seat of Allegheny County, PA?
The County Seat is located in Pittsburgh and in addition the county government website is

What counties are adjacent to Allegheny County, PA?
Bordering Counties are Butler CountyArmstrong CountyWestmoreland CountyWashington CountyBeaver County.

Allegheny County, PA Vital Records

Where can find Allegheny County Birth, marriage, Divorce and Death Records?
Allegheny County vital records can be found at the Pennsylvania Office of Vital Records has copies of birth and death records since 1906 and death records. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Pennsylvania for current fees and application process. Birth, marriage, and death records are connected with central life events.

You can search online for Allegheny County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Pennsylvania  Birth CertificateDeath Certificate Applications to mail.

Allegheny County, PA Census Records

What Allegheny County, PA census records are available?
There are many types of census records for Allegheny County guide you in researching your family tree. Federal Population Schedules are available for 1790-189019001910192019301940.

Allegheny Co. Mortality Schedules can be obtained for 1850, 1860, 1870 and 1880. Allegheny Co. Industry and Agriculture Schedules can be acquired for 1850, 1860, 1870 and 1880. Allegheny Co. Union Veterans Schedules can be found for 1890. You can find free down-loadable and also printable census forms to help you with your research. See Also Pennsylvania Census Records Research Guide

Allegheny County, PA Courthouse and Government Records

Allegheny County Courthouse

What genealogical records can I find in the Allegheny County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in Allegheny County. The years listed below are the first noted records with this county. See Also Pennsylvania Courthouse Records Research Guide.

Allegheny County, PA Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for Allegheny County, PA?
A list of Allegheny County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Pennsylvania Archives, Historical & Genealogical Societies.

Where can I connect with other Allegheny County, PA Researchers through message boards and forums?

What other genealogical resources are available in Allegheny County, PA?
The following are web links to Genealogy, Records and Resources pertaining to Allegheny County. Each of these genealogy links fall into 3 categories: Business oriented Sites, Private Sites or Organization Sites. Some have free access some require a cost. This is basically a listing which has been compiled or submitted. I do not recommend or promote one genealogy site over another.

Allegheny Co. PA Maps, Atlases & Gazetteers

Allegheny Co. PA Books, Newspapers & Publications

Allegheny Co. PA Church / Bible Records & Cemeteries / Graveyards

Allegheny Co. PA Family Websites, Pictures & Histories

Allegheny Co. PA General and History Websites

Allegheny Co. PA Immigration & Naturalization

Allegheny Co. PA Military Records

Allegheny Co. PA Schools & Directories