Tatanka – Memberships
| Board of Commissioners Corson County Dewey County Harding County Perkins County Ziebach County |
Municipalities Town of Bison Town of Buffalo City of Camp Crook City of Dupree City of Eagle Butte Town of Isabel City of Lemmon City of McLaughlin City of McIntosh City of Timber Lake |
Conservation Districts Corson County Dewey County Harding County Perkins County Tri-County Ziebach County Standing Rock Tribal |
| Economic Development Entities Bison Economic Development Committee Lemmon Area Charitable and EDC |
Tribes Cheyenne River Sioux Tribe Standing Rock Sioux Tribe |