Total population (1990 census): 17673
County seat: Olivia
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 885 | 221254 | 28131621 bu | |
| Wheat for Grain, Total | 194 | 6652 | 259999 bu | |
| Spring Wheat for Grain | 191 | 6405 | 251548 bu | |
| Winter Wheat for Grain | 5 | 247 | 8451 bu | |
| Barley | 9 | 217 | 10890 bu | |
| Oats | 73 | 1373 | 100166 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 928 | 234458 | 9067427 bu | |
| Dry Edible Beans | 46 | 5620 | 98973 cwt | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 214 | 6347 | 19545 tons, dry | |
| Alfalfa Hay | 178 | 4469 | 15552 tons, dry | |
| Small Grain Hay | 15 | 262 | 696 tons, dry | |
| Tame Hay | 39 | 407 | 737 tons, dry | |
| Wild Hay | 31 | 317 | 392 tons dry | |
| Grass Silage | 24 | 892 | 6498 tons, grn | |
| Corn for Silage | 81 | 2900 | 44561 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 3 | Z | ||
| Sugar Beets for Sugar | 158 | 46000 | 820417 t | |
| Head Cabbage | 4 | 1 | ||
| Cucumbers & Pickles | 7 | 22 | ||
| Dry Onions | 3 | D | ||
| Green Peas | 189 | 11765 | ||
| Squash | 5 | D | ||
| Sweet Corn | 211 | 21700 | ||
| Tomatoes | 4 | 3 | ||
| Fruits | Farms | Acres | Yield | |
| Strawberries | 3 | 1 | 1200 lbs | |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
Z=Less than half of the unit shown.