Santee Sioux Reservation
| Santee Sioux Reservation | |
|---|---|
| Location in Nebraska | |
| Tribe | Santee Sioux Nation | 
| Country | United States | 
| State | Nebraska | 
| County | Knox | 
| Headquarters | Niobrara | 
| Government | |
| • Body | Tribal Council | 
| • Chairman | Roger Trudell | 
| • Vice-Chairman | Sidney Tuttle | 
| Area | |
|  • Total | 172.99 sq mi (448.0 km2) | 
| Population  (2017) | |
|  • Total | 1,041 | 
| • Density | 6.0/sq mi (2.3/km2) | 
| Website | santeesiouxnation.net | 
The Santee Sioux Reservation (Dakota: Isáŋyathi) of the Santee Sioux (also known as the Eastern Dakota) was established in 1863 in present-day Nebraska. The tribal seat of government is located in Niobrara, Nebraska, with reservation lands in Knox County.