
Total population (1990 census): 19181
County seat: Monmouth
CropSELECT
FruitsCrop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 570 | 141237 | 19680123 bu | |
| Wheat | 20 | 544 | 35474 bu | |
| Oats | 64 | 1135 | 95398 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 261 | 7266 | 22069 tons, dry | |
| Alfalfa Hay | 230 | 5553 | 19249 tons, dry | |
| Small Grain Hay | 19 | 254 | 493 tons, dry | |
| Tame Hay | 49 | 1023 | 1371 tons, dry | |
| Grass Silage | 14 | 436 | 2869 tons, grn | |
| Corn for Silage | 43 | 846 | 15063 tons, grn | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 528 | 113236 | 5623578 bu | |
| Vegetables | Farms | Acres | Yield | |
| Tomatoes | 3 | 1 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 3 | (D) | (D) | |
| 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 | 4 | (D) | 4 | 60 |
| Florculture Crops | 3 | (D) | 3 | (D) |
| Bedding/Garden Plants | 3 | (D) | (D) | (D) |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.