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Washington County MDGenWeb is a free genealogical site about the history of the county. We hope you find helpful clues for your research of ancestors and relatives of Washington county.

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Are you familiar with the area? Do you have a family tree connection to the area? Volunteers are always needed! Please consider contributing your pieces of Washington County family history. Corrections, updates, and additions to this site are always welcome. If you are interested in helping, please contact the State Coordinator.

County Coordinator: You? Washington County MDGenWeb is AVAILABLE FOR ADOPTION.

Temporary County Coordinator: Norma Hass normahass01@gmail.com

COUNTY FORMATION

Washington County was officially established September 6, 1776. The area came from the northwestern section of Frederick County, which separated from Prince George's County in 1748. In 1789, Washington County lost its western portion to the formation of Allegany County.

On Washington County's northern boundary is the Mason and Dixon line, which separates Fulton and Franklin Counties, Pennsylvania, from Washington County. To its east lies Frederick County, Maryland. To its west lies Allegany County, Maryland, which is separated by Sideling Hill Creek. Washington County's southern border is the Potomac River, which divides Washington County from and Loudoun County, Virginia, and Morgan, Berkeley, and Jefferson Counties of West Virginia.

Hagerstown is the county seat.