Total population (1990 census): 67783
County seat: Jefferson
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 753 | 71015 | 9135550 bu | |
| Wheat for Grain, Total | 208 | 5280 | 275279 bu | |
| Spring Wheat | 8 | 123 | 4257 bu | |
| Winter Wheat | 200 | 5157 | 271022 bu | |
| Barley | 20 | 238 | 11975 bu | |
| Oats | 220 | 3049 | 191889 bu | |
| Popcorn | 3 | D | D | |
| Rye | 5 | 76 | 2820 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 510 | 43038 | 1913439 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 745 | 39379 | 103950 tons, dry | |
| Alfalfa Hay | 641 | 23352 | 70721 tons, dry | |
| Small Grain Hay | 79 | 1171 | 2465 tons, dry | |
| Tame Hay | 84 | 1816 | 4377 tons, dry | |
| Wild Hay | 79 | 966 | 1366 tons dry | |
| Grass Silage | 198 | 12074 | 75059 tons, grn | |
| Corn for Silage | 306 | 9549 | 149798 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Asparagus | 6 | 8 | ||
| Green Lima Beans | 8 | 264 | ||
| Snap Bean | 4 | 1 | ||
| Beets | 4 | D | ||
| Carrots | 4 | 1047 | ||
| Dry Onions | 3 | D | ||
| Green Onions | 3 | 1 | ||
| Green Peas | 8 | 274 | ||
| Sweet Peppers | 4 | 4 | ||
| Potatoes | 5 | 1750 | 380096 bu | |
| Pumpkins | 15 | 133 | ||
| Spinach | 3 | 113 | ||
| Squash | 7 | 21 | ||
| Sweet Corn | 22 | 1470 | ||
| Tomatoes | 7 | 3 | ||
| Watermelons | 4 | D | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 20 | 84 | 7054 trees | |
| Cherries, Total | 3 | D | D | |
| Pears | 3 | 1 | 17 trees | |
| Strawberries | 7 | 48 | D lbs | |
| 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 | 40 | 412244 | 3214 | 17184 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 12 | X | 1872 | X |
| Florculture Crops | 18 | D | 11 | 1913 |
| Bedding/Garden Plants | 17 | 122044 | D | 1202 |
| Potted Flowering Plants | 4 | D | D | D |
| Cut Christmas Trees Harvested | 6 | X | 103 | 38 |
| Nursery Crops | 7 | D | D | D |
| Sod Harvested | 9 | X | 1674 | 4981 |
| Herb, Spice, Medicinal, Bioactive... | Farms | Acres | Yield | |
| Tobacco | 18 | 25 | 47223 lbs | |
| Maple Trees Tapped | 3 | D | 191 Trees Tapped | |
| Mint for Oil | 8 | 2941 | 142247 lbs of Oil | |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.