Boise City is a city in and the county seat of Cimarron County, Oklahoma, United States. The population was 1,266 at the 2010 census. As of the census of 2000, there were 1,483 people, 610 households, and 400 families residing in the city. The population density was 1,180.6 people per square mile (454.4/km²). There were 752 housing units at an average density of 598.7 per square mile (230.4/km²). The racial makeup of the city was 81.66% White, 0.20% African American, 1.69% Native American, 0.27% Asian, 13.35% from other races, and 2.83% from two or more races. Hispanic or Latino of any race were 21.04% of the population.