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Berkeley County West Virginia Last Updated: 05/03/2026 |
| Berkeley County is located in the Shenandoah Valley in the eastern panhandle of West Virginia. According to the 2020 census, the county had a population of 122,076, making it the second most populous of West Virginia's 55 counties, after Kanawha County. The city of Martinsburg is the county's administrative center. | |