Total population (1990 census): 803732
County seat: Martinez
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 | 4 | 2420 | 339245 bu | |
| Wheat for Grain, Total | 8 | 1323 | 91692 bu | |
| Barley | 8 | 277 | 20332 bu | |
| Safflower | 9 | 1005 | 2522000 lbs | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 56 | 8113 | 32093 tons, dry | |
| Alfalfa Hay | 19 | 3409 | 21265 tons, dry | |
| Small Grain Hay | 28 | 1700 | 4968 tons, dry | |
| Tame Hay | 13 | 2077 | 4185 tons, dry | |
| Wild Hay | 6 | 496 | D | |
| Grass Silage | 5 | 431 | D | |
| Vegetables | Farms | Acres | Yield | |
| Snap Bean | 4 | D | ||
| Head Cabbage | 3 | 5 | ||
| Cantaloupes | 5 | 14 | ||
| Cucumbers & Pickles | 5 | 12 | ||
| Eggplant | 3 | 1 | ||
| Garlic | 3 | D | ||
| Herbs, Fresh Cut | 4 | D | ||
| Dry Onions | 11 | 59 | ||
| Hot Peppers | 5 | 12 | ||
| Sweet Peppers | 6 | D | ||
| Pumpkins | 6 | 117 | ||
| Squash | 6 | 24 | ||
| Sweet Corn | 11 | 2221 | ||
| Tomatoes | 20 | 3610 | ||
| Watermelons | 20 | 3610 | ||
| Other Vegetables | 3 | 1 | ||
| Fruits and Nuts | Farms | Acres | Yield | |
| Apples | 34 | 1964 | 416928 trees | |
| Apricots | 35 | 1060 | 100158 trees | |
| Cherries, Total | 37 | 587 | 60894 trees | |
| Sweet Cherries | 37 | 587 | 60894 trees | |
| Figs | 3 | 9 | 485 trees | |
| Grapes | 42 | 1206 | 740674 vines | |
| Nectarines | 11 | 32 | 3972 trees | |
| Peaches | 25 | 201 | 27325 trees | |
| Pears | 11 | 116 | 11120 trees | |
| Persimmons | 6 | 16 | 2275 trees | |
| Plums and Prunes | 11 | 37 | 4645 trees | |
| Pomegranates | 3 | 4 | 610 trees | |
| Almonds | 22 | 106 | 4271 | |
| Pecans | 5 | 6 | 307 in shell | |
| Pistachios | 9 | 73 | 10868 in shell | |
| English Walnuts | 76 | 1173 | 60746 in shell | |
| Blackberries | 3 | 2 | 6600 lbs | |
| Boysenberries | 5 | 4 | 8410 lbs | |
| Strawberries | 4 | 12 | 163846 lbs | |
| Other Crops | Farms | Acres | Yield | |
| Herbs, Total | 4 | D | X | |
| 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 | 2797814 | 518 | 11713 |
| Nursery, Floriculture Vegetable and Flower Seed Crops | 29 | X | 240 | X |
| Floriculture Crops | 32 | 2733450 | 125 | 10745 |
| Bedding and Garden Plants | 18 | 1210830 | 62 | 6719 |
| Cut Flowers and Cut Florist Greens | 10 | 979000 | 26 | 2791 |
| Foliage Plants | 4 | D | D | D |
| Potted Flowering Plants | 7 | D | D | D |
| Cut Christmas Trees Harvested | 7 | X | 213 | 264 |
| Nursery Crops | 13 | D | 76 | 672 |
| Other Nursery and Greenhouse Crops | 4 | D | D | 16 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.