At the 2010 census there were 546 people, 255 households, and 149 families living in the town. The population density was. There were 311 housing units at an average density of. The racial makeup of the town was 98.5% White, 0.5% Pacific Islander, and 0.9% from two or more races. Hispanic or Latino of any race were 0.4%. Of the 255 households 21.6% had children under the age of 18 living with them, 43.1% were married couplesliving together, 9.4% had a female householder with no husband present, 5.9% had a male householder with no wife present, and 41.6% were non-families. 34.5% of households were one person and 12.1% were one person aged 65 or older. The average household size was 2.14 and the average family size was 2.70. The median age in the town was 42.5 years. 17.6% of residents were under the age of 18; 6.2% were between the ages of 18 and 24; 30.3% were from 25 to 44; 27% were from 45 to 64; and 19% were 65 or older. The gender makeup of the town was 48.7% male and 51.3% female.
At the 2000 census there were 647 people, 280 households, and 180 families living in the town. The population density was 2,299.2 inhabitants per square mile. There were 339 housing units at an average density of 1,204.7 per square mile. The racial makeup of the town was 99.07% White, 0.15% African American, and 0.77% from two or more races. Hispanic or Latino of any race were 2.32%. Of the 280 households 23.6% had children under the age of 18 living with them, 50.7% were married couples living together, 9.6% had a female householder with no husband present, and 35.4% were non-families. 30.7% of households were one person and 18.9% were one person aged 65 or older. The average household size was 2.31 and the average family size was 2.83. The age distribution was 20.6% under the age of 18, 8.0% from 18 to 24, 27.5% from 25 to 44, 23.2% from 45 to 64, and 20.7% 65 or older. The median age was 42 years. For every 100 females, there were 88.1 males. For every 100 females age 18 and over, there were 91.1 males. The median household income was $22,750 and the median family income was $29,886. Males had a median income of $24,219 versus $21,250 for females. The per capita income for the town was $12,927. About 17.0% of families and 20.9% of the population were below the poverty line, including 40.2% of those under age 18 and 9.0% of those age 65 or over.
Education
West Preston Middle School is a small middle school located in Masontown, West Virginia, and consists of two main buildings. As of 2012, the school is 95 years old. The current principal is James Hoit. In 2015, a new middle school will be built, as the levy held in 2010 gave permission to go ahead. The school was founded in 1918, by citizens of Masontown selling pies. This school was built as Masontown High School and later consolidated with Arthurdale High School to become Valley High School, and consisted of the main building with three stories. Later, the second building was built. This was at first an elementary school, but later was combined with West Preston School to form one big high school. Later, after the construction of Preston High School, it was made into a middle school.