Total population (1990 census): 19226
County seat: Mount Pleasant
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 499 | 85642 | 11322611 bu | |
| Wheat for Grain, Total | 14 | 599 | 31766 bu | |
| Oats | 64 | 995 | 73738 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 483 | 70786 | 3378591 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 326 | 10114 | 25993 tons, dry | |
| Alfalfa Hay | 269 | 7528 | 20753 tons, dry | |
| Small Grain Hay | 55 | 795 | 1366 tons, dry | |
| Tame Hay | 73 | 1281 | 2825 tons, dry | |
| Wild Hay | 9 | 156 | 281 tons dry | |
| Grass Silage | 11 | 354 | 2304 tons, grn | |
| Corn for Silage | 33 | 728 | 10340 tons, grn | |
| Fruits | Farms | Acres | Yield | |
| Apples | 4 | 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 | 10 | D | 74 | 227 |
| Cut Christmas Trees Harvested | 9 | X | 34 | 134 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.