Tunnelton is a town in southwestern Preston County, West Virginia, United States. The population was 294 at the 2010 census.
Tunnelton took its name after the nearby Kingwood Tunnel. The Tunnelton Railroad Depot was listed on the National Register of Historic Places in 1996.
Tunnelton is located at 39°23′42″N 79°44′47″W (39.395000, -79.746438).
According to the United States Census Bureau, the town has a total area of 0.34 square miles (0.88 km2), all of it land.
At the 2010 census there were 294 people, 110 households, and 74 families living in the town. The population density was 864.7 inhabitants per square mile (333.9/km2). There were 117 housing units at an average density of 344.1 per square mile (132.9/km2). The racial makeup of the town was 99.0% White, 0.3% African American, and 0.7% from two or more races. Hispanic or Latino of any race were 0.7%.
Of the 110 households 37.3% had children under the age of 18 living with them, 50.9% were married couples living together, 12.7% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 32.7% were non-families. 21.8% of households were one person and 11.8% were one person aged 65 or older. The average household size was 2.67 and the average family size was 3.09.