Total population (1990 census): 121003
County seat: Mercer
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 | 533 | 23376 | 1868336 bu | |
| Wheat | 121 | 2816 | 127350 bu | |
| Barley | 24 | 275 | 14496 bu | |
| Buckwheat | 6 | 72 | 1564 bu | |
| Emmer and Spelt | 14 | 113 | 8091 bu | |
| Oats | 385 | 6282 | 344769 bu | |
| Rye | 10 | 143 | 5073 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybeans for Beans | 129 | 8042 | 229254 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 770 | 39695 | 91170 tons, dry | |
| Alfalfa Hay | 416 | 13503 | 39780 tons, dry | |
| Small Grain Hay | 43 | 692 | 1114 tons, dry | |
| Tame Hay | 475 | 17251 | 33556 tons, dry | |
| Wild Hay | 46 | 989 | 1728 tons dry | |
| Grass Silage | 161 | 7260 | 44969 tons, grn | |
| Corn for Silage or Green Chop | 290 | 9822 | 117896 tons, green | |
| Sorghum for Silage or Green Chop | 6 | 56 | 345 tons, green | |
| Vegetables | Farms | Acres | Yield | |
| Snap Beans | 7 | 3 | ||
| Beets | 3 | Z | ||
| Head Cabbage | 11 | 8 | ||
| Cantaloups | 8 | 7 | ||
| Cucumbers and Pickles | 8 | 12 | ||
| Kale | 3 | Z | ||
| Lettuce and Romaine | 3 | D | ||
| Dry Onions | 3 | D | ||
| Hot Peppers | 9 | 2 | ||
| Sweet Peppers | 18 | 22 | ||
| Potatoes | 10 | 33 | 7760 cwt | |
| Pumpkins | 16 | 74 | ||
| Squash | 9 | 9 | ||
| Sweet Corn | 43 | 330 | ||
| Tomatoes | 20 | 21 | ||
| Turnips | 3 | Z | ||
| Other Vegetables | 6 | D | ||
| Fruits and Nuts | Farms | Acres | Yield | |
| Apples | 23 | 199 | 12261 trees | |
| Cherries, Total | 4 | 1 | 7 trees | |
| Sweet Cherries | 3 | D | D | |
| Grapes | 11 | 6 | 3240 vines | |
| Peaches | 5 | 6 | 193 trees | |
| Tame Blueberries | 4 | 4 | 4014 lbs | |
| Strawberries | 7 | 10 | 41810 lbs | |
| Other Crops | Farms | Acres | Yield | |
| Maple Trees Tapped | 6 | 82 | 1377 taps | |
| 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 | 50 | 878086 | 446 | 8993 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 6 | X | D | X |
| Floriculture Crops | 25 | 737608 | D | 6141 |
| Bedding and Garden Plants | 22 | 488858 | D | 3222 |
| Potted Flowering Plants | 5 | D | D | D |
| Cut Christmas Trees Harvested | 13 | X | 71 | 177 |
| Nursery Crops | 11 | D | 176 | D |
| Vegetable and Flower Seeds | 3 | D | D | D |
| Greenhouse Vegetables | 5 | 36606 | X | 236 |
| Other Nursery and Greenhouse Crops | 5 | D | D | 5 |
*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.