Total population (1990 census): 48439
County seat: Walla Walla
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 | 14 | 6539 | 1433777 bu | |
| Wheat for Grain, Total | 341 | 232419 | 15934694 bu | |
| Spring Wheat | 131 | 35815 | 1903455 bu | |
| Winter Wheat | 301 | 196604 | 14031239 bu | |
| Barley | 95 | 22584 | 1548810 bu | |
| Buckwheat | 6 | 1608 | 50401 lbs | |
| Canola | 18 | 2566 | 3623090 lbs | |
| Mustard Seed | 4 | 964 | 1025200 lbs | |
| Oats | 3 | D | D | |
| Grain Legumes | Farms | Acres | Yield | |
| Dry Edible Beans | 23 | 5457 | 105899 cwt | |
| Dry Edible Peas | 33 | 5696 | 11804002 lbs | |
| Forages | Farms | Acres | Yield | |
| Field Seed and Grass Seed Crops | 35 | 8233 | X | |
| Alfalfa Seed | 22 | 5760 | 4833823 lbs | |
| Austrian Winter Peas | 6 | 585 | 827600 lbs | |
| Fescue Seed | 4 | 543 | 418407 lbs | |
| Kentucky Bluegrass Seed | 3 | 704 | 497269 lbs | |
| Other Seed | 3 | D | 44250 lbs | |
| Total Hay* | 169 | 16169 | 86311 tons, dry | |
| Alfalfa Hay | 120 | 11787 | 74098 tons, dry | |
| Small Grain Hay | 14 | 224 | 460 tons, dry | |
| Tame Hay | 56 | 3133 | 8775 tons, dry | |
| Wild Hay | 5 | 122 | 495 tons dry | |
| Grass Silage | 8 | 903 | 7454 tons, grn | |
| Corn for Silage | 3 | 527 | D | |
| Vegetables | Farms | Acres | Yield | |
| Asparagus | 36 | 1414 | ||
| Green Lima Beans | 3 | 458 | ||
| Snap Beans | 4 | 250 | ||
| Beets | 3 | 2 | ||
| Head Cabbage | 3 | 6 | ||
| Cucumbers and Pickles | 4 | 140 | ||
| Lettuce and Romaine | 3 | D | ||
| Dry Onions | 40 | 2172 | ||
| Green Peas | 47 | 10962 | ||
| Potatoes | 9 | 9256 | 5943150 cwt | |
| Radishes | 3 | D | ||
| Spinach | 12 | 306 | ||
| Sweet Corn | 19 | 7535 | ||
| Fruits and Nuts | Farms | Acres | Yield | |
| Apples | 22 | 5222 | 2367954 trees | |
| Cherries, Total | 15 | 280 | 38993 trees | |
| Sweet Cherries | 15 | 280 | 38993 trees | |
| Grapes | 15 | D | D | |
| Plums and Prunes | 3 | 22 | 4960 trees | |
| Other Crops | Farms | Acres | Yield | |
| Herbs, Total | lbs | |||
| 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 | 18 | 92980 | 2714 | D |
| Nursery, Floriculture Vegetable and Flower Seed Crops | 12 | X | 2706 | X |
| Floriculture Crops | 5 | D | 5 | D |
| Vegetable and Flower Seeds | 6 | D | 937 | D |
| Other Nursery and Greenhouse Crops | 3 | D | D | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.