Total population (1990 census): 2453
County seat: Fort Pierre
CropSELECT
Cereals, Pseudocereals, Oilseeds
Industrial, Fiber
Forages
Vegetables
Small Fruits
Tree Fruits and Nuts
Herb, Aromatic, Medicinal, and Bioactive
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 3 | 875 | 63000 bu | |
| Sorghum for Grain or Seed | 13 | 3699 | 221658 bu | |
| Wheat for Grain, Total | 82 | 89848 | 2709309 bu | |
| Durum Wheat | 4 | 1397 | 36680 bu | |
| Other Spring Wheat | 28 | 20084 | 386934 bu | |
| Winter Wheat | 77 | 68367 | 2285695 bu | |
| Oats | 8 | 615 | 22235 bu | |
| Proso Millet | 5 | 1800 | 42000 bu | |
| Sunflower Seed | 14 | 5138 | 5335020 lbs | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 109 | 42699 | 56120 tons, dry | |
| Alfalfa Hay | 67 | 12330 | 16446 tons, dry | |
| Small Grain Hay | 10 | 839 | D | |
| Tame Hay | 37 | 7250 | 15599 tons, dry | |
| Wild Hay | 71 | 22009 | 22875 tons dry | |
| Grass Silage | 4 | 271 | D | |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.