Box Elder (Lakota: čhaŋšúška; "box elder maple") is a city in Pennington and Meade counties in the State of South Dakota. The population was 7,800 at the 2010 census, making it the 13th most populous city in South Dakota. Ellsworth Air Force Base lies on the northeast side of the city.
Box Elder was named from nearby Boxelder Creek.
Box Elder is located at 44°6′55″N 103°4′55″W (44.115349, -103.081997).
According to the United States Census Bureau, the city has a total area of 13.91 square miles (36.03 km2), of which 13.90 square miles (36.00 km2) is land and 0.01 square miles (0.03 km2) is water.
Box Elder has been assigned the ZIP code 57719 and the FIPS place code 06620. It is located within minutes of Ellsworth AFB, and surrounds it on three sides.
At the 2010 census there were 7,800 people, 2,443 households, and 1,968 families living in the city. The population density was 561.2 inhabitants per square mile (216.7/km2). There were 2,828 housing units at an average density of 203.5 per square mile (78.6/km2). The racial makeup of the city was 79.5% White, 5.1% African American, 4.4% Native American, 2.2% Asian, 0.4% Pacific Islander, 2.4% from other races, and 6.0% from two or more races. Hispanic or Latino of any race were 7.9%.
Of the 2,443 households, 55.2% had children under the age of 18 living with them, 60.6% were married couples living together, 14.1% had a female householder with no husband present, 5.8% had a male householder with no wife present, and 19.4% were non-families.