Independent Cities
Virginia Counties
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Frederick County Virginia ☎ (540) 665-5600 Last Updated: 09/29/2026 |
| Frederick County is located in the state of Virginia. According to the 2020 U.S. Census, the county had a population of 91,419. The county seat is Winchester. Frederick County is the northernmost point of Virginia, situated on the East Coast. | |
| The county lies at the mouth of the Shenandoah Valley, a 200-mile-long valley between two mountain ranges – the Blue Ridge Mountains to the east and the Allegheny Range (part of the Appalachian Mountains) to the west. The valley is bordered by two rivers, the Potomac River to the north and the James River to the south. | |