Box Elder (57719) is located just a few miles NE of Rapid City and is home to Ellsworth Air Force Base. There are great communities (new and old) within this small town of just over 9,000 residents including military members, family members and civilian employees. Box Elder is an ideal location for EAFB staff & family members as well as those wanting easy access to the amenities of a larger city with a slower, simpler, small town pace.