Total population (1990 census): 7676
County seat: Keosauqua
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 396 | 44270 | 5537637 bu | |
| Wheat for Grain, Total | 13 | 232 | 8088 bu | |
| Oats | 71 | 1163 | 71813 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 365 | 44647 | 2043426 bu | |
| Forages | Farms | Acres | Yield | |
| Field Seed and Grass Seed Crops | 3 | 71 | X | |
| Total Hay* | 475 | 25354 | 64850 tons, dry | |
| Alfalfa Hay | 335 | 15055 | 44427 tons, dry | |
| Small Grain Hay | 53 | 862 | 1522 tons, dry | |
| Tame Hay | 205 | 8307 | 16683 tons, dry | |
| Wild Hay | 18 | 489 | 754 tons dry | |
| Grass Silage | 24 | 641 | 4404 tons, grn | |
| Corn for Silage | 46 | 966 | 21089 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Sweet Corn | 3 | D | ||
| Strawberries | 3 | 1 | 1700 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 | 6 | D | 31 | 46 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.