According to the NACo, the county seat for Mercer County, West Virginia, is Princeton.
According to census.gov, the 2007 population estimate of Mercer County, West Virginia, is 62,980.
According to census.gov, the area in square miles of Mercer County, West Virginia, is 420.69.
According to the NACo, Mercer County, West Virginia, was founded in the year 1837.
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in 1753
According to census.gov, the 2007 population density estimate of Mercer County, West Virginia, is 149.8 people per square mile.
The address of the Mercer County Historical Society Inc is: Po Box 5012, Princeton, WV 24740-5012
According to the NACo, Berkeley County, West Virginia, was founded in the year 1772.
According to the NACo, Braxton County, West Virginia was founded in the year 1836.
According to the NACo, Cabell County, West Virginia was founded in the year 1809.
According to the NACo, Calhoun County, West Virginia was founded in the year 1856.