Total population (1990 census): 7334
County seat: Audubon
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 468 | 103274 | 12811212 bu | |
| Oats | 75 | 1411 | 94229 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 465 | 101724 | 4468600 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 314 | 11928 | 30146 tons, dry | |
| Alfalfa Hay | 242 | 7539 | 21817 tons, dry | |
| Small Grain Hay | 43 | 734 | 1585 tons, dry | |
| Tame Hay | 86 | 2936 | 5799 tons, dry | |
| Wild Hay | 6 | 310 | 271 tons dry | |
| Grass Silage | 9 | 409 | 2018 tons, grn | |
| Corn for Silage | 47 | 1356 | 19077 tons, grn | |
*Alfalfa, grass silage, green chops etc.