Total population (1990 census): 22813
County seat: Waverly
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 713 | 105948 | 14824642 bu | |
| Wheat for Grain, Total | 3 | D | 2452 bu | |
| Oats | 132 | 1960 | 134574 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 647 | 81635 | 3865852 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 381 | 10917 | 31852 tons, dry | |
| Alfalfa Hay | 323 | 7379 | 24553 tons, dry | |
| Small Grain Hay | 58 | 932 | 2019 tons, dry | |
| Tame Hay | 56 | 633 | 1146 tons, dry | |
| Wild Hay | 31 | 271 | 394 tons dry | |
| Grass Silage | 54 | 1702 | 11213 tons, grn | |
| Corn for Silage | 114 | 2371 | 43121 tons, grn | |
| Fruits | Farms | Acres | Yield | |
| Apples | 3 | 7 | 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 | D | 72 | 97 |
| Cut Christmas Trees Harvested | 5 | X | 28 | 50 |
| Other Nursery and Greenhouse Crops | 3 | D | D | 3 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.