Total population (1990 census): 24789
County seat: Marshall
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 675 | 154986 | 17899087 bu | |
| Sorghum for grain or seed | 3 | D | D | |
| Wheat for Grain, Total | 121 | 5140 | 157654 bu | |
| Spring Wheat for Grain | 121 | 5140 | 157654 bu | |
| Barley | 8 | 161 | 6915 bu | |
| Oats | 76 | 1637 | 113795 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 675 | 163984 | 6087178 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 344 | 11428 | 31345 tons, dry | |
| Alfalfa Hay | 279 | 8365 | 26704 tons, dry | |
| Small Grain Hay | 12 | 230 | 561 tons, dry | |
| Tame Hay | 50 | 909 | 1436 tons, dry | |
| Wild Hay | 78 | 1051 | 1301 tons dry | |
| Grass Silage | 24 | 873 | 4027 tons, grn | |
| Corn for Silage | 139 | 5852 | 74234 tons, grn | |
| Sorghum for Silage | 6 | 53 | 482 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Sweet Corn | 3 | 4 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 3 | 21 | 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 | 6 | 20856 | 5 | D |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 3 | X | 3 | X |
| Florculture Crops | 4 | D | D | 151 |
| Bedding/Garden Plants | 4 | D | D | 151 |
| Nursery Crops | 3 | D | D | 130 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.