Total population (1990 census): 13306
County seat: Thief River Falls
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 37 | 3916 | 299204 bu | |
| Wheat for Grain, Total | 234 | 91852 | 2393547 bu | |
| Spring Wheat for Grain | 219 | 85433 | 2216249 bu | |
| Winter Wheat for Grain | 56 | D | D | |
| Barley | 174 | 37869 | 1534320 bu | |
| Canola | 36 | 4705 | 4853919 bu | |
| Flaxseed | 4 | 154 | 1660 bu | |
| Oats | 99 | 6851 | 325339 bu | |
| Sunflower | 49 | 10404 | 8821299 lbs | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 47 | 11073 | 309018 bu | |
| Dry Edible Beans | 10 | 1524 | 18083 cwt | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 210 | 25223 | 54502 tons, dry | |
| Alfalfa Hay | 189 | 19470 | 44560 tons, dry | |
| Small Grain Hay | 14 | D | D | |
| Tame Hay | 33 | 3158 | 5930 tons, dry | |
| Wild Hay | 30 | 1566 | 2264 tons dry | |
| Corn for Silage | 16 | 439 | D | |
| Vegetables | Farms | Acres | Yield | |
| Sweet Corn | 3 | 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 | 5 | D | 8 | 145 |
| Florculture Crops | 4 | D | D | D |
| Bedding/Garden Plants | 4 | D | D | 38 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.