Jefferson County is located in the Shenandoah Valley and is the easternmost county of the U.S. state of West Virginia. As of the 2010 census the population was 53,498. Its county seat is Charles Town. The county was founded in 1801.
According to the U.S. Census Bureau, the county has a total area of 212 square miles (550 km), of which 210 square miles (540 km) is land and 2.0 square miles (5.2 km) (1.0%) is water. It is the only West Virginia county where the Blue Ridge Mountains and Shenandoah River can be found as referenced in West Virginia’s state song, “Take Me Home, Country Roads” by John Denver. The lowest point in the state of West Virginia is located on the Potomac River (just east of Harpers Ferry) in Jefferson County, where it flows out of West Virginia and into Maryland.
As of the census of 2000, there were 42,190 people, 16,165 households, and 11,315 families residing in the county. The population density was 201 people per square mile (78/km). There were 17,623 housing units at an average density of 84 per square mile (32/km). The racial makeup of the county was 91.02% White, 6.09% Black or African American, 0.60% Asian, 0.28% Native American, 0.04% Pacific Islander, 0.60% from other races, and 1.37% from two or more races. 1.74% of the population were Hispanics or Latinos of any race.
There were 16,165 households out of which 31.90% had children under the age of 18 living with them, 55.90% were married couples living together, 10.00% had a female householder with no husband present, and 30.00% were non-families. 23.20% of all households were made up of individuals and 8.50% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 2.99.
In the county, the population was spread out with 23.90% under the age of 18, 10.00% from 18 to 24, 29.90% from 25 to 44, 25.10% from 45 to 64, and 11.20% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 97.90 males. For every 100 females age 18 and over, there were 95.40 males.
The median income for a household in the county was $44,374, and the median income for a family was $51,351. Males had a median income of $35,235 versus $26,531 for females. The per capita income for the county was $20,441. About 7.20% of families and 10.30% of the population were below the poverty line, including 11.40% of those under age 18 and 9.40% of those age 65 or over.
As of the 2010 United States Census, there were 53,498 people, 19,931 households, and 13,971 families residing in the county. The population density was 255.2 inhabitants per square mile (98.5/km). There were 22,037 housing units at an average density of 105.1 per square mile (40.6/km). The racial makeup of the county was 87.6% white, 6.6% black or African American, 1.2% Asian, 0.2% American Indian, 0.1% Pacific islander, 1.8% from other races, and 2.6% from two or more races. Those of Hispanic or Latino origin made up 4.7% of the population. In terms of ancestry, 25.9% were German, 17.3% were English, 12.1% were Irish, and 6.6% were American.
Of the 19,931 households, 34.6% had children under the age of 18 living with them, 54.9% were married couples living together, 10.1% had a female householder with no husband present, 29.9% were non-families, and 22.7% of all households were made up of individuals. The average household size was 2.61 and the average family size was 3.07. The median age was 38.9 years.
The median income for a household in the county was $65,603 and the median income for a family was $77,185. Males had a median income of $54,959 versus $36,782 for females. The per capita income for the county was $29,733. About 4.4% of families and 8.4% of the population were below the poverty line, including 10.9% of those under age 18 and 6.9% of those age 65 or over.