Fort Supply is a town in Woodward County, Oklahoma, United States, 13 kilometres (8.1 mi) northwest of the city of Woodward, Oklahoma, the county seat. The population was 330 at the 2010 census.
Fort Supply is located at 36°34′20″N 99°34′26″W / 36.57222°N 99.57389°W / 36.57222; -99.57389 (36.572271, -99.573856).
According to the United States Census Bureau, the town has a total area of 0.2 square miles (0.52 km), all of it land.
As of the census of 2000, there were 328 people, 136 households, and 98 families residing in the town. The population density was 1,458.4 people per square mile (575.6/km²). There were 171 housing units at an average density of 760.3 per square mile (300.1/km²). The racial makeup of the town was 95.73% White, 0.30% African American, 1.83% Native American, 0.61% from other races, and 1.52% from two or more races. Hispanic or Latino of any race were 0.91% of the population.
There were 136 households out of which 25.7% had children under the age of 18 living with them, 61.8% were married couples living together, 7.4% had a female householder with no husband present, and 27.9% were non-families. 27.2% of all households were made up of individuals and 14.0% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.91.
In the town, the population was spread out with 24.4% under the age of 18, 7.0% from 18 to 24, 23.5% from 25 to 44, 27.4% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 86.4 males. For every 100 females age 18 and over, there were 86.5 males.
The median income for a household in the town was $30,893, and the median income for a family was $37,500. Males had a median income of $28,333 versus $20,833 for females. The per capita income for the town was $15,836. About 5.8% of families and 6.8% of the population were below the poverty line, including 13.4% of those under age 18 and none of those age 65 or over.