Total population (1990 census): 355054
County seat: Olathe
CropSELECT
Cereals, Pseudocereals, Oilseeds
Industrial, Fiber
Forages
Vegetables
Small Fruits
Tree Fruits and Nuts
Herb, Aromatic, Medicinal, and Bioactive
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 75 | 10401 | 980662 bu | |
| Sorghum for Grain or Seed | 24 | 1580 | 119501 bu | |
| Wheat for Grain, Total | 67 | 7629 | 313919 bu | |
| Oats | 19 | 520 | 42938 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 148 | 26387 | 831802 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 315 | 19955 | 36846 tons, dry | |
| Alfalfa Hay | 41 | 1360 | 3820 tons, dry | |
| Small Grain Hay | 13 | 427 | 719 tons, dry | |
| Tame Hay | 259 | 16747 | 30306 tons, dry | |
| Wild Hay | 35 | 1251 | 1792 tons dry | |
| Grass Silage | 5 | 170 | 626 tons, grn | |
| Corn for Silage | 13 | 1174 | 23936 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 5 | D | ||
| Cucumbers and Pickles | 3 | D | ||
| Hot Peppers | 3 | 1 | ||
| Sweet Peppers | 4 | D | ||
| Squash | 3 | D | ||
| Sweet Corn | 6 | 18 | ||
| Tomatoes | 7 | 7 | ||
| Turnips | 3 | 1 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 6 | 24 | 1473 trees | |
| 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 | 50 | 376483 | 1942 | 5195 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 14 | X | D | X |
| Florculture Crops | 13 | 366123 | D | 1785 |
| Bedding/Garden Plants | 12 | D | D | 1206 |
| Cut Christmas Trees Harvested | 14 | X | 156 | 269 |
| Nursery Crops | 14 | D | 204 | 636 |
| Sod Harvested | 8 | X | 1535 | 2419 |
| Other Nursery and Greenhouse Crops | 9 | D | 40 | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.