Beaver County, Pennsylvania Genealogy

United States &gt; Pennsylvania &gt; Beaver County

County Courthouse
810 Third Street Beaver, PA 15009 (724) 728-5700

Parent County
12 March 1800, Beaver County was created from Allegheny and Washington Counties.

Boundary Changes

 * Future southern 1/3 of Beaver County was disputed between Virginia and Pennsylvania until Mason-Dixon Line was finalized in 1780
 * Future northern 2/3 was not included in any county until 1785.
 * 27 January 1750: Future southern 1/3 was incorporated into Cumberland County when it was formed.
 * 9 March 1771: Future southern 1/3 became part of Bedford County when it was erected.
 * 26 February 1773: Future southern 1/3 became part of Westmoreland County when it was formed.
 * 28 March 1781: Future southern 1/3 became part of Washington County when it was formed.
 * 1783: Future northern 2/3 was designated as Depreciation Lands for Revolutionary War soldiers.
 * 1785: Future northern 2/3 was annexed to Northumberland County.
 * 24 September 1788: Nearly all of Beaver fell into Allegheny County when it was created. a small southern portion remained in Washington County.
 * 12 March 1800: Beaver County was created.
 * 20 March 1849: Lawrence County was created, giving Beaver County its current boundaries.

Neighboring Counties
Allegheny | Butler | Lawrence | Washington | Columbiana county, Ohio | Hancock county, West Virginia

Maps

 * Ancestor Tracks has posted free, downloadable images of the township maps showing landowners from Map of Lawrence and Beaver Counties from Actual Surveys by N.S. Ames which was published in 1860.

Web Sites

 * Linkpendium - Beaver County
 * USGenWeb project
 * Family History Library Catalog