Washington County, Pennsylvania Online Historical Directories

Expand your research by checking out the Pennsylvania Online Historical Newspapers here.


The Historic Pittsburgh City Directory Collection can be searched across all its directories here.

Links to directories at New England Historic Genealogical Society (NEHGS) are to the images themselves, which are browsable.  Non-subscribers will not be able to view these. Non-subscribers can, however, use the search engine and see a listing of possible results (but no images or further details).  To search by keyword, go to the Digital Archive & Library search engine on this page (it is the second search box).  For more information on how to access subscription websites, read Number 5 on my FAQs page.

 - includes Washington Borough and Washington County 

Allegheny City and Pittsburgh Business Directories, Harris, 1841 - $ (NEHGS)
 - Part II (includes Washington Borough and Washington County)


Monongahela and Youghiogheny Valleys Directory, Thurston, 1859 - Free (RootsWeb)
 - includes California, Fredericktown, Greenfield (Coal Center), Millsboro, and Monongahela
 - transcribed

Allegheny City and Pittsburgh Blue Book, Brown Haven, 1895 - Free (Don's List)
 - includes Washington County





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