Total population (1990 census): 14269
County seat: Clarion
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 600 | 162707 | 22388449 bu | |
| Oats | 29 | 431 | 30812 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 583 | 154492 | 6429191 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 119 | 2163 | 4745 tons, dry | |
| Alfalfa Hay | 95 | 1497 | 3900 tons, dry | |
| Small Grain Hay | 13 | 115 | 137 tons, dry | |
| Tame Hay | 21 | 256 | 521 tons, dry | |
| Wild Hay | 6 | D | D | |
| Corn for Silage | 10 | 518 | 5054 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Sweet Corn | 3 | D | ||
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.