The post office was established in 1889.[5] The town was first called "Bremer", the name of an early homesteader.[4] Eventually it was changed to "Box Elder", for the nearby creek lined with box elder trees.[5]
As of the census[9] of 2000, there were 794 people, 183 households, and 167 families residing in the CDP. The population density was 138.1 inhabitants per square mile (53.3/km2). There were 190 housing units at an average density of 33.1 per square mile (12.8/km2). The racial makeup of the CDP was 4.16% White, 94.84% Native American, 0.25% from other races, and 0.76% from two or more races. Hispanic or Latino of any race were 2.77% of the population.
There were 183 households, out of which 64.5% had children under the age of 18 living with them, 56.3% were married couples living together, 29.5% had a female householder with no husband present, and 8.2% were non-families. 4.9% of all households were made up of individuals, and 1.6% had someone living alone who was 65 years of age or older. The average household size was 4.34 and the average family size was 4.49.
In the CDP, the population was spread out, with 47.9% under the age of 18, 11.5% from 18 to 24, 27.0% from 25 to 44, 10.1% from 45 to 64, and 3.7% who were 65 years of age or older. The median age was 19 years. For every 100 females there were 88.6 males. For every 100 females age 18 and over, there were 80.0 males.
The median income for a household in the CDP was $19,728, and the median income for a family was $18,913. Males had a median income of $19,773 versus $20,795 for females. The per capita income for the CDP was $6,128. About 47.2% of families and 51.2% of the population were below the poverty line, including 59.1% of those under age 18 and 21.1% of those age 65 or over.
Education
Box Elder Public Schools educates students from kindergarten through 12th grade.[10] They are known as the Bears.[11]Box Elder High School is a Class C school.
Box Elder is referenced in the indie rock band Pavement's song "Box Elder," although the lyrics erroneously refer to Montana's abbreviation as "MO," the abbreviation for Missouri.