Powhatan County is a county located in the Commonwealth of Virginia. Its county seat is Powhatan. Powhatan County is included in the Greater Richmond Region. The James River forms the county's northern border, and the Appomattox River is on the south side. The county is named for the paramount chief of the powerful confederacy of tribes of Algonquian-speaking Native Americans in the Tidewater in 1607, when the British settled at Jamestown.