York County (formerly Charles River County) is a county in the eastern part of the Commonwealth of Virginia, located in the Tidewater. As of the 2010 census, the population was 65,464. The county seat is the unincorporated town of Yorktown.Located on the north side of the Virginia Peninsula, with the York River as its northern border, York County is included in the Virginia Beach-Norfolk-Newport News, VA-NC Metropolitan Statistical Area.York County contains many tributaries of the York River.