Total population (1996 census): 93,182
County seat: Troy
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 602 | 72125 | 9946248 bu | |
| Wheat for Grain, Total | 299 | 11721 | 649303 bu | |
| Oats | 38 | 251 | 18546 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 596 | 76360 | 3565824 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 296 | 6969 | 18391 tons, dry | |
| Alfalfa Hay | 239 | 4979 | 14413 tons, dry | |
| Small Grain Hay | 20 | 221 | 588 tons, dry | |
| Tame Hay | 73 | 1167 | 2351 tons, dry | |
| Wild Hay | 10 | 115 | 112 tons dry | |
| Grass Silage | 14 | 487 | 2780 tons, grn | |
| Corn for Silage | 45 | 1315 | 22631 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 3 | D | ||
| Head Cabbage | 4 | 1 | ||
| Cantaloupes | 3 | D | ||
| Cucumbers & Pickles | 3 | Z | ||
| Sweet Peppers | 3 | 1 | ||
| Pumpkins | 8 | 53 | ||
| Sweet Corn | 13 | 54 | ||
| Tomatoes | 6 | D | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 6 | 22 | 2193 trees | |
| 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 | 26 | 397034 | 68 | 2322 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 6 | X | 22 | X |
| Florculture Crops | 14 | D | D | 1616 |
| Bedding/Garden Plants | 11 | 181912 | 1 | D |
| Cut Flowers and Cut Florist Greens | 3 | D | D | D |
| Potted Flowering Plants | 7 | 183600 | D | 523 |
| Cut Christmas Trees Harvested | 8 | D | 6 | 112 |
| Nursery Crops | 5 | D | 29 | D |
| Other Nursery and Greenhouse Crops | 4 | D | 29 | 4 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.
Z=Less than half of the unit shown.