| Population | 4,010 |
| Square Miles | 204.51 |
| Population Density | 19.61 |
| Median Age | 37 |
| Median Household Income | $33,264 |
| Per Capita Income | $15,940 |
| Median Rent | $272 |
| Percent Renters | 33% |
| Median Flandreau, SD 57028 For Sale Price: | $197,000 |
| Studio For Sale Median Price: | $29,500 |
| 2 Bedroom For Sale Median Price: | $129,900 |
| 3 Bedroom For Sale Median Price: | $197,000 |
| 4 Bedroom For Sale Median Price: | $224,900 |