It is one of the many communities of the Black Hills Indian Reservation. According to the 2010 census, the population of Auburn is 52. It is located along the foothills of the Sierra Nevada Mountains. Auburn, California is 31 miles northeast of Sacramento. Auburn Rancheria is located within the land cession number 288. It is linked to the Reservation set aside from land cession number 288. The Reservation number is 287. However, Auburn Rancheria is really within the boundaries of the Black Hills Reservation. All of the Sierra Nevada Mountains including the foothills, are within the boundaries of the Black Hills Reservation.