Total population (1990 census): 20655
County seat: Deadwood
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 | 4 | 266 | 25372 bu | |
| Wheat for Grain, Total | 16 | 880 | 32344 bu | |
| Other Spring Wheat | 12 | 710 | 25746 bu | |
| Winter Wheat | 6 | 170 | 6598 bu | |
| Oats | 12 | 411 | 23180 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 193 | 28543 | 44956 tons, dry | |
| Alfalfa Hay | 146 | 21265 | 37199 tons, dry | |
| Small Grain Hay | 29 | 930 | 1545 tons, dry | |
| Tame Hay | 59 | 3570 | 3795 tons, dry | |
| Wild Hay | 38 | 2378 | 2083 tons dry | |
| Grass Silage | 4 | 400 | 1000 tons, grn | |
| Corn for Silage | 9 | 458 | 4455 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Beets | 3 | 1 | ||
| Cucumbers & Pickles | 3 | 1 | ||
| Parsley | 1 | D | ||
| Sweet Corn | 5 | 16 | ||
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.