Total population (1990 census): 11164
County seat: Petersburg
CropSELECT
FruitsCrop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 254 | 70379 | 9227651 bu | |
| Wheat | 81 | 3530 | 225847 bu | |
| Oats | 9 | 156 | 12058 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 130 | 3371 | 11083 tons, dry | |
| Alfalfa Hay | 109 | 2557 | 8988 tons, dry | |
| Small Grain Hay | 12 | 165 | 212 tons, dry | |
| Tame Hay | 32 | 544 | 1629 tons, dry | |
| Grass Silage | 3 | 105 | 760 tons, grn | |
| Corn for Silage | 14 | 312 | 5060 tons, grn | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 258 | 65991 | 2798278 bu | |
| 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 | 7 | - | 84 | 97 |
| Cut Christmas Trees Harvested | 5 | (X) | 50 | (D) |
| Other Nursery and Greenhouse Crops | 3 | - | 31 | 3 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.