Total population (1990 census): 38761
County seat: Willmar
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 640 | 129068 | 15242715 bu | |
| Wheat for Grain, Total | 129 | 5952 | 190867 bu | |
| Spring Wheat for Grain | 128 | 5907 | 189299 bu | |
| Winter Wheat for Grain | 3 | 45 | 1568 bu | |
| Barley | 21 | 427 | 19023 bu | |
| Oats | 135 | 4509 | 234453 bu | |
| Sunflower | 3 | D | 167995 lbs | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 552 | 104884 | 3791471 bu | |
| Dry Edible Beans | 24 | 4117 | 66057 cwt | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 458 | 23991 | 69171 tons, dry | |
| Alfalfa Hay | 406 | 17947 | 57935 tons, dry | |
| Small Grain Hay | 41 | 872 | 1437 tons, dry | |
| Tame Hay | 34 | 554 | 1008 tons, dry | |
| Wild Hay | 107 | 2093 | 3778 tons dry | |
| Grass Silage | 45 | 2525 | 15039 tons, grn | |
| Corn for Silage | 178 | 6991 | 90728 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Sugar Beets for Sugar | 44 | 14907 | 281093 t | |
| Green Peas | 18 | 1552 | ||
| Sweet Corn | 25 | 2221 | ||
| Tomatoes | 3 | 1 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 6 | D | 1886 trees | |
| Strawberries | 3 | 4 | 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 | 4 | D | D | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.