Total population (1990 census): 33953
County seat: Centreville
CropSELECT
Cereals, Pseudocereals, Oilseeds
Industrial, Fiber
Forages
Vegetables
Small Fruits
Tree Fruits and Nuts
Herb, Aromatic, Medicinal, and Bioactive
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 223 | 50885 | 4590071 bu | |
| Sorghum for Grain or Seed | 7 | 356 | 21980 bu | |
| Wheat | 212 | 32329 | 2193763 bu | |
| Barley | 49 | 4389 | 359303 bu | |
| Oats | 3 | 38 | D | |
| Rye | 5 | 213 | 6262 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybeans for Beans | 273 | 69750 | 2294823 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 88 | 2905 | 6292 tons, dry | |
| Alfalfa Hay | 53 | 1087 | 2438 tons, dry | |
| Small Grain Hay | 7 | 274 | 878 tons, dry | |
| Tame Hay | 48 | 926 | 1865 tons, dry | |
| Wild Hay | 3 | 46 | 62 tons dry | |
| Grass Silage | 9 | 572 | 3146 tons, grn | |
| Corn for Silage | 29 | 2279 | 24268 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Asparagus | 4 | 60 | ||
| Green Lima Beans | 6 | 691 | ||
| Cantaloupes | 9 | 51 | ||
| Sweet Peppers | 4 | 6 | ||
| Pumpkins | 4 | 9 | ||
| Spinach | 5 | 185 | ||
| Squash | 5 | 271 | ||
| Sweet Corn | 13 | 604 | ||
| Tomatoes | 9 | 46 | ||
| Watermelons | 6 | 20 | ||
| Other Vegetables | 3 | D | ||
| Fruits and Nuts | Farms | Acres | Yield | |
| Apples | 8 | 16 | 615 trees | |
| Peaches | 5 | 15 | D | |
| Strawberries | 3 | 10 | 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 | 35 | 93860 | 1290 | 3535 |
| Nursery, Floriculture Vegetable and Flower Seed Crops | 12 | X | 781 | X |
| Floriculture Crops | 18 | 66108 | 29 | 473 |
| Bedding and Garden Plants | 7 | 58808 | D | 370 |
| Cut Flowers and Cut Florist Greens | 7 | D | 16 | 36 |
| Potted Flowering Plants | 4 | D | D | 67 |
| Cut Christmas Trees Harvested | 9 | X | 40 | 35 |
| Nursery Crops | 9 | D | 287 | 988 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.