Standing Rock Indian Agency (North Dakota)

History
The Standing Rock Agency succeeded the Grand River Agency which was established in 1869 for several bands of Sioux Indians. The Grand River Agency was moved to Standing Rock in 1873 and renamed Standing Rock Agency in 1874.

Records
Letters received by the Office of Indian Affairs from the Standing Rock Agency, 1875-1880, have been microfilmed by the National Archives as part of their Microcopy Number M234, rolls 846-852. Copies are available at the National Archives and at the Family History Library and its family history centers (their microfilm roll numbers 1661576 thru 1661582).

The 1900 federal census included population schedules for the Standing Rock Reservation. The census includes the non-Indian employees of the Standing Rock Agency, as well as many pages of Indian Population Schedules for the native population of the Reservation. They are recorded as District 260, Standing Rock Reservation, in Morton County, North Dakota and in District 48 in South Dakota where it is listed in the Bureau of the Census records as a separate locality of the state..