Total population (1990 census): 96119
County seat: Iowa City
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 778 | 98460 | 13131480 bu | |
| Sorghum for grain or seed | 9 | 149 | 5170 bu | |
| Wheat for Grain, Total | 25 | 1116 | 57974 bu | |
| Oats | 249 | 5060 | 346153 bu | |
| Popcorn | 5 | 33 | 28225 lbs, shelled | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 629 | 76018 | 3596929 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 634 | 23739 | 72724 tons, dry | |
| Alfalfa Hay | 565 | 18027 | 61332 tons, dry | |
| Small Grain Hay | 67 | 1090 | 2020 tons, dry | |
| Tame Hay | 97 | 2483 | 4923 tons, dry | |
| Wild Hay | 7 | 52 | 59 tons dry | |
| Grass Silage | 76 | 2087 | 13159 tons, grn | |
| Corn for Silage | 126 | 2239 | 37334 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Asparagus | 6 | 7 | ||
| Snap Bean | 5 | 1 | ||
| Lettuce and Romaine | 5 | 1 | ||
| Sweet Peppers | 3 | Z | ||
| Potatoes | 4 | 4 | 705 bu | |
| Pumpkins | 5 | 7 | ||
| Squash | 3 | Z | ||
| Sweet Corn | 16 | 23 | ||
| Tomatoes | 10 | 2 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 23 | 111 | 21197 trees | |
| Apricots | 7 | 1 | 76 trees | |
| Cherries, Total | 4 | 1 | 26 trees | |
| Grapes | 6 | 1 | 595 vines | |
| Peaches | 8 | 1 | 117 trees | |
| Pears | 5 | 1 | 75 trees | |
| Plums and Prunes | 6 | 2 | 57 trees | |
| Raspberries | 6 | 5 | D | |
| Strawberries | 5 | 11 | 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 | 30 | 87251 | 159 | 992 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 4 | X | D | X |
| Florculture Crops | 8 | D | 3 | 483 |
| Bedding/Garden Plants | 6 | 41251 | D | D |
| Cut Christmas Trees Harvested | 14 | X | 48 | 78 |
| Nursery Crops | 8 | D | 59 | 119 |
| Other Nursery and Greenhouse Crops | 10 | D | 49 | D |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.
Z=Less than half of the unit shown.