Total population (1990 census): 14817
County seat: 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 | 106 | 27635 | 2344327 bu | |
| Sorghum for Grain or Seed | 15 | 2684 | 185765 bu | |
| Wheat for Grain, Total | 137 | 85075 | 2523687 bu | |
| Other Spring Wheat | 91 | D | D | |
| Winter Wheat | 118 | 58112 | 1831130 bu | |
| Oats | 22 | 3068 | 181310 bu | |
| Popcorn | 4 | 738 | 2809000 lbs shelled | |
| Proso Millet | 25 | 6996 | 251037 bu | |
| Sunflower Seed | 78 | 25618 | 39761787 lbs | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybeans for Beans | 20 | 3647 | 152993 bu | |
| Dry Edible Beans | 3 | 1004 | 27253 cwt | |
| Lentils | 1 | D | D | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 132 | 32189 | 52238 tons, dry | |
| Alfalfa Hay | 80 | 11023 | 24277 tons, dry | |
| Small Grain Hay | 16 | 979 | 1550 tons, dry | |
| Tame Hay | 56 | 7079 | 14012 tons, dry | |
| Wild Hay | 70 | 12659 | 11691 tons dry | |
| Grass Silage | 5 | 449 | 2124 tons, grn | |
| Corn for Silage | 23 | 1889 | 15202 tons, grn | |
| Sorghum for Silage | 8 | 1230 | 10260 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Pumpkins | 3 | D | ||
| Squash | 4 | 30 | ||
| Sweet Corn | 3 | 23 | ||
| Other Crops | Farms | Acres | Yield | |
| Mint for Oil | 1 | D | D | |
| Nursery and Greenhouse Crops, Cut Christmas Trees Harvested, Mushrooms, and Sod Grown for Sale | Farms | Sq. ft. under glass or other protection | Acres in the open | Sales ($1,000) |
| Nursery and Greenhouse Crops | 3 | D | D | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.