Box Elder, SD
Box Elder is a city in Meade and Pennington counties in the U.S. state of South Dakota. The population was 7,800 at the 2010 census. Ellsworth Air Force Base lies on the north side of the city.
Box Elder is located at 44°6′55″N 103°4′55″W / 44.11528°N 103.08194°W / 44.11528; -103.08194 (44.115349, -103.081997).
According to the United States Census Bureau, the city has a total area of 5.8 square miles (15.0 km²).