Total population (1990 census): 357313
County seat: Joliet
CropSELECT
FruitsCrop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 584 | 130440 | 17027338 bu | |
| Wheat | 142 | 7590 | 473961 bu | |
| Oats | 72 | 1769 | 119437 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 255 | 6927 | 17889 tons, dry | |
| Alfalfa Hay | 214 | 5356 | 14917 tons, dry | |
| Small Grain Hay | 5 | 76 | 152 tons, dry | |
| Tame Hay | 50 | 1106 | 2158 tons, dry | |
| Wild Hay | 17 | 169 | 217 tons dry | |
| Grass Silage | 13 | 220 | 1333 tons, grn | |
| Corn for Silage | 40 | 3094 | 53304 tons, grn | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 561 | 109030 | 4605280 bu | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 3 | (D) | ||
| Beets | 9 | 18 | ||
| Head Cabbage | 7 | 66 | ||
| Cantaloupes | 6 | 8 | ||
| Cucumbers & Pickles | 5 | (D) | ||
| Herbs, Fresh Cut | 3 | (D) | ||
| Green Onions | 3 | (D) | ||
| Hot Peppers | 4 | (D) | ||
| Sweet Peppers | 9 | 74 | ||
| Pumpkins | 13 | 255 | ||
| Squash | 6 | 45 | ||
| Sweet Corn | 12 | 275 | ||
| Tomatoes | 11 | 26 | ||
| Watermelons | 4 | 7 | ||
| Other Vegetables | 3 | (D) | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 8 | 13 | 1145 trees | |
| Grapes | 5 | (D) | (D) | |
| Peaches | 4 | (Z) | 23 trees | |
| Pears | 4 | 1 | 32 trees | |
| Plums and Prunes | 3 | (Z) | (D) | |
| Strawberries | 3 | 4 | (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 | 76 | 821264 | 4367 | 19870 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 23 | (X) | 2377 | (X) |
| Florculture Crops | 31 | 798864 | (D) | 6694 |
| Bedding/Garden Plants | 24 | 382192 | 12 | 3278 |
| Foliage Plants | 5 | 2472 | (D) | (D) |
| Potted Flowering Plants | 12 | 414200 | 20 | 3387 |
| Cut Christmas Trees Harvested | 9 | (X) | 108 | 203 |
| Nursery Crops | 36 | 11400 | 1609 | 7701 |
| Sod Harvested | 5 | (X) | 2136 | 4762 |
| Other Nursery and Greenhouse Crops | 10 | - | 437 | 26 |
*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.