Formed January 27, 1750 from Lancaster County. Named for Cumberland County in England, it originally extended to Pennsylvania's western limits. Carlisle, county seat, was founded 1751. Crossed by major roads, county had a key role in westward migration.

Marker is at the intersection of Hanover Street (Pennsylvania Route 34) and High Street (U.S. 11), on the right when traveling south on Hanover Street.

Courtesy hmdb.org

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