Fort Ashby is a census-designated place (CDP) in Mineral County, West Virginia, USA, along Patterson Creek. It is part of the Cumberland, MD-WV Metropolitan Statistical Area. The population was 1,380 at the 2010 census. The community was originally chartered as Frankfort and then known as Alaska before it took the name of its well-known historic landmark.
Fort Ashby is located at 39°29′52″N 78°46′4″W (39.497767, -78.767851).
According to the United States Census Bureau, the CDP has a total area of 9.2 km² (3.6 mi²). 9.2 km² (3.5 mi²) of it is land and 0.1 km² (0.04 mi²) (1.03%) is water.
At the 2000 census, there were 1,354 people, 574 households and 390 families residing in the CDP. The population density was 160.4/km² (415.8/mi²). There were 609 housing units at an average density of 72.1/km² (187.0/mi²). The racial makeup of the CDP was 98.82% White, 0.30% African American, 0.07% Native American, 0.30% Asian, 0.30% from other races, and 0.22% from two or more races. Hispanic or Latino of any race were 0.44% of the population.
There were 574 households of which 29.6% had children under the age of 18 living with them, 56.8% were married couples living together, 8.2% had a female householder with no husband present, and 31.9% were non-families.