Fort Duchesne /duːˈʃeɪn/ is a census-designated place (CDP) in Uintah County, Utah, United States. The population was 714 at the 2000 census, an increase from the 2000 figure of 621.
According to the United States Census Bureau, the CDP has a total area of 7.7 square miles (19.8 km²), of which, 7.0 square miles (18.2 km²) of it is land and 0.6 square miles (1.7 km²) of it (8.36%) is water.
As of the census of 2000, there were 621 people, 165 households, and 138 families residing in the CDP. The population density was 88.5 people per square mile (34.2/km²). There were 183 housing units at an average density of 26.1/sq mi (10.1/km²). The racial makeup of the CDP was 5.48% White, 90.18% Native American, 0.16% Asian, 0.16% from other races, and 4.03% from two or more races. Hispanic or Latino of any race were 5.15% of the population.
There were 165 households out of which 46.1% had children under the age of 18 living with them, 30.3% were married couples living together, 43.0% had a female householder with no husband present, and 15.8% were non-families. 13.3% of all households were made up of individuals and 1.2% had someone living alone who was 65 years of age or older. The average household size was 3.61 and the average family size was 3.78.
In the CDP, the population was spread out with 40.1% under the age of 18, 11.4% from 18 to 24, 29.8% from 25 to 44, 14.7% from 45 to 64, and 4.0% who were 65 years of age or older. The median age was 24 years. For every 100 females, there were 95.9 males. For every 100 females age 18 and over, there were 82.4 males.
The median income for a household in the CDP was $18,750, and the median income for a family was $14,688. Males had a median income of $30,714 versus $20,750 for females. The per capita income for the CDP was $6,466. About 52.1% of families and 54.6% of the population were below the poverty line, including 57.4% of those under age 18 and 52.4% of those age 65 or over.