Total population (1990 census): 140320
County seat: Oshkosh
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 459 | 38650 | 4381023 bu | |
| Wheat for Grain, Total | 179 | 4980 | 262291 bu | |
| Spring Wheat | 11 | 243 | 11108 bu | |
| Winter Wheat | 172 | 4737 | 251183 bu | |
| Barley | 3 | 74 | 3740 bu | |
| Oats | 130 | 2750 | 175221 bu | |
| Rye | 3 | 112 | 6302 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 340 | 26561 | 1097624 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 485 | 33385 | 80864 tons, dry | |
| Alfalfa Hay | 381 | 17031 | 47469 tons, dry | |
| Small Grain Hay | 55 | 1058 | 1974 tons, dry | |
| Tame Hay | 68 | 1905 | 4218 tons, dry | |
| Wild Hay | 46 | 839 | 1696 tons dry | |
| Grass Silage | 176 | 12552 | 76513 tons, grn | |
| Corn for Silage | 260 | 10382 | 135774 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Cucumbers & Pickles | 3 | D | ||
| Green Peas | 21 | 717 | ||
| Pumpkins | 8 | 27 | ||
| Sweet Corn | 53 | 4110 | ||
| Tomatoes | 4 | 6 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 12 | 30 | 2462 trees | |
| Cherries, Total | 3 | Z | 8 trees | |
| Tart Cherries | 3 | Z | 8 trees | |
| Grapes | 4 | Z | 180 vines | |
| Pears | 3 | Z | D trees | |
| Plums and Prunes | 3 | Z | 8 trees | |
| Raspberries | 3 | 1 | 2933 lbs | |
| Strawberries | 4 | 27 | 145861 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 | 22 | 153160 | 529 | 1599 |
| Florculture Crops | 12 | D | D | 730 |
| Bedding/Garden Plants | 10 | 104460 | D | 614 |
| Potted Flowering Plants | 3 | D | D | D |
| Nursery Crops | 5 | D | 25 | 93 |
| Other Nursery and Greenhouse Crops | 3 | D | 104 | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
Z=Less than half of the unit shown.