Herrick, SD

ZIP code 57538 encompasses the small town of Eagle Butte, South Dakota. Known as the administrative center of the Cheyenne River Sioux Reservation, the area is home to tribal government offices, medical facilities, schools, and a casino. The Cheyenne River Agency, a division of the Bureau of Indian Affairs, is a key landmark in this ZIP code, overseeing the management of tribal affairs and resources within the reservation.