Total population (1990 census): 18591
County seat: Algona
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 1201 | 278774 | 39434946 bu | |
| Oats | 125 | 1667 | 126349 bu | |
| Popcorn | 3 | D | D | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 1172 | 242432 | 10333066 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 225 | 5278 | 10820 tons, dry | |
| Alfalfa Hay | 154 | 2983 | 6672 tons, dry | |
| Small Grain Hay | 21 | 334 | 832 tons, dry | |
| Tame Hay | 59 | 1127 | 2005 tons, dry | |
| Wild Hay | 39 | 641 | 831 tons dry | |
| Grass Silage | 8 | 193 | 1439 tons, grn | |
| Corn for Silage | 104 | 3180 | 55595 tons, grn | |
| Sorghum for Silage | 5 | 61 | 747 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Green Peas | 8 | 337 | ||
| Sweet Corn | 13 | 723 | ||
| 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 | 3 | D | 12 | D |
| Cut Christmas Trees Harvested | 3 | X | 12 | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.