According to census.gov, the 2007 population estimate of Clay County, West Virginia, is 10,330.
According to the NACo, Clay County, West Virginia was founded in the year 1858.
According to census.gov, the total water area of Barbour County, West Virginia, is 1.96 square miles.
According to census.gov, the total water area of Boone County, West Virginia, is 0.20 square miles.
According to census.gov, the total water area of Braxton County, West Virginia, is 2.69 square miles.
According to census.gov, the total water area of Brooke County, West Virginia, is 3.41 square miles.
According to census.gov, the total water area of Cabell County, West Virginia, is 6.43 square miles.
According to census.gov, the total water area of Calhoun County, West Virginia, is 0.02 square miles.
According to census.gov, the total water area of Fayette County, West Virginia, is 4.43 square miles.
According to census.gov, the total water area of Gilmer County, West Virginia, is 0.02 square miles.
The address of the Clay County Historic Landmarks Commission is: Po Box 670, Clay, WV 25043-0670
The address of the Clay County Veterans Memorial Fund is: 2312 Blue Knob Rd, Maysel, WV 25133-8065