Total population (1990 census): 30339
County seat: Monroe
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 851 | 78803 | 10672858 bu | |
| Wheat for Grain, Total | 75 | 2613 | 133595 bu | |
| Spring Wheat | 11 | 238 | 9842 bu | |
| Winter Wheat | 65 | 2375 | 123753 bu | |
| Barley | 80 | 1568 | 77913 bu | |
| Oats | 309 | 5739 | 340396 bu | |
| Rye | 3 | 37 | D | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 378 | 29010 | 1372553 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 907 | 89217 | 251899 tons, dry | |
| Alfalfa Hay | 833 | 52998 | 179474 tons, dry | |
| Small Grain Hay | 136 | 2822 | 6470 tons, dry | |
| Tame Hay | 51 | 1905 | 3485 tons, dry | |
| Wild Hay | 22 | 234 | 437 tons dry | |
| Grass Silage | 414 | 31258 | 186103 tons, grn | |
| Corn for Silage | 519 | 13523 | 200771 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 3 | D | ||
| Green Peas | 5 | 332 | ||
| Pumpkins | 3 | 2 | ||
| Sweet Corn | 12 | 1200 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 6 | D | 25730 trees | |
| 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 | 8 | D | 24 | 296 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 3 | X | 5 | X |
| Florculture Crops | 4 | D | D | D |
| Bedding/Garden Plants | 3 | D | D | D |
| Nursery Crops | 3 | D | D | 15 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.