Total population (1990 census): 18035
County seat: Manchester
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 1014 | 157975 | 21723080 bu | |
| Wheat for Grain, Total | 6 | 118 | 6660 bu | |
| Barley | 11 | 247 | 14542 bu | |
| Oats | 298 | 6268 | 410873 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 634 | 59798 | 3031817 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 690 | 33361 | 104823 tons, dry | |
| Alfalfa Hay | 622 | 23238 | 82629 tons, dry | |
| Small Grain Hay | 125 | 2498 | 5770 tons, dry | |
| Tame Hay | 53 | 1096 | 2712 tons, dry | |
| Wild Hay | 6 | 37 | 55 tons dry | |
| Grass Silage | 148 | 6492 | 40978 tons, grn | |
| Corn for Silage | 333 | 9027 | 162943 tons, grn | |
| Sorghum Cut For Dry Forage or Hay | 3 | 7 | 21 tons, dry | |
| Sorghum for Silage | 6 | 51 | 440 tons, grn | |
| 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 | 8 | 16548 | D | 214 |
| Cut Christmas Trees Harvested | 3 | X | D | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.