The Standing Rock Sioux Tribe operates under a constitution approved on April 24, 1959 by the Tribal Council of Standing Rock Sioux Tribe. The Tribal Council consists of a Chairman, Vice-Chairman, a Secretary and fourteen additional Councilmen which are elected by the tribal members. Regular Tribal Council meetings are the first Tuesday, Wednesday, and Thursday of the month. Committee meetings are held the second week of the month. The last Monday of the month is for gaming and other tribal business.

The Crow Creek Sioux Tribal Council consists of a Tribal Chairman, Vice Chairman, Secretary, and Treasurer. Regular meetings are held once a month. All are welcome to attend.

The Lower Brule Sioux Tribe is a sovereign nation defined by its government-to-government relationship with the United States; as part of the Great Sioux Nation, the Tribe signed treaties in 1824, 1851, 1865 and 1868 with the federal government that constitute the legal documents establishing boundaries and recognizing the rights of sovereign tribal governments.

Considers requests for medical and funeral assistance. Other requests for financial assistance are considered on a case by case basis.

The tribal office for Rosebud Sioux Tribe.

Services provided: Coordinates all agencies within the jurisdiction to include public, private, and non-governmental organizations to ensure the protection of life and property in the event of threatened or actual natural disasters, terrorism, technological, or man-made events. Responsibilities includes develops and maintains the county plan for reacting to emergencies; during an actual emergency, the director coordinates the action; and trains other agencies to respond to emergencies. County emergency Managers can make contact with volunteer fire departments in their County. This is not an emergency first response organization. If you are in immediate danger please call 911.

The Cheyenne River Sioux Tribe or Cheyenne River Lakota Nation (Oyate), members include representatives from four of the traditional seven bands of the Lakota, also known as Teton Sioux: the Minnecoujou, Two Kettle (Oohenunpa), Sans Arc (Itazipco) and Blackfoot (Sihásapa).

The Oglala Lakota or Oglala Sioux, meaning to scatter one's own in Lakota language are one of the seven subtribes of the Lakota people, who along with the Nakota and Dakota, make up the Great Sioux Nation.

The Sisseton Wahpeton Oyate of the Lake Traverse Reservation, formerly Sisseton-Wahpeton Sioux Tribe/Dakota Nation, is a federally recognized tribe comprising two bands and two sub-divisions of the Isanti or Santee Dakota people.

Within the Flandreau Santee Sioux Tribe are the following services - Tribal Police Department - Law Enforcement Services (offers fingerprinting, background checks, and gun locks), social services, enrollment, tribal courts, child care, Dakota language, Department of Natural Resources, Education, Tribal Health Clinic, Counseling Center, Grace Moore Senior Center, Housing, and Wellness Center.