Total population (1990 census): 20777
County seat: Preston
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 976 | 136491 | 19362826 bu | |
| Wheat for Grain, Total | 7 | 224 | 8150 bu | |
| Spring Wheat for Grain | 6 | D | D | |
| Barley | 103 | 2537 | 157150 bu | |
| Oats | 351 | 7798 | 486252 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 650 | 77107 | 3419361 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 900 | 51119 | 149998 tons, dry | |
| Alfalfa Hay | 817 | 36182 | 120856 tons, dry | |
| Small Grain Hay | 168 | 3570 | 7619 tons, dry | |
| Tame Hay | 69 | 1707 | 3297 tons, dry | |
| Wild Hay | 24 | 329 | 519 tons dry | |
| Grass Silage | 131 | 9331 | 53127 tons, grn | |
| Corn for Silage | 390 | 9697 | 179761 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Asparagus | 4 | 6 | ||
| Green Peas | 10 | 519 | ||
| Sweet Corn | 18 | 602 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 7 | 47 | 6175 trees | |
| Grapes | 5 | 4 | 733 vines | |
| Raspberries | 7 | 2 | 2640 lbs | |
| Strawberries | 8 | 10 | 7900 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 | 19 | 31220 | 210 | 309 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 3 | X | D | X |
| Florculture Crops | 9 | 21180 | 3 | 164 |
| Bedding/Garden Plants | 7 | 21180 | D | D |
| Cut Christmas Trees Harvested | 5 | X | 133 | 15 |
| Greenhouse Vegetables | 3 | D | X | 19 |
| Other Nursery and Greenhouse Crops | 5 | D | 73 | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.