According to census.gov, the 2007 population estimate of Jefferson County, West Virginia, is 42,190.
According to the NACo, Jefferson County, West Virginia, was founded in the year 1801.
According to census.gov, the total area in square miles of Jefferson County, West Virginia, is 211.57.
Harpers Ferry is located in Jefferson County, West Virginia.
As of the 2000 Census, the population of Jefferson County Idaho is, 19,155.
As of the latest available data (2019), the estimated population of Fayette County, WV is approximately 43,304.
According to fedstat.gov, the estimated population of Jefferson County, Kentucky, is 701,500.
According to census.gov, the 2007 population estimate of Brooke County, West Virginia, is 25,447.
According to census.gov, the 2007 population estimate of Grant County, West Virginia, is 11,299.
According to census.gov, the 2007 population estimate of Hancock County, West Virginia, is 32,667.
According to census.gov, the 2007 population estimate for McDowell County, West Virginia is 22,991.
According to census.gov, the 2007 population estimate for Marion County, West Virginia is 56,728.
According to census.gov, the 2007 population estimate of Mason County, West Virginia, is 25,957.