Total population (1996 census): 48,255
County seat: Circleville
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 401 | 94646 | 12863857 bu | |
| Wheat for Grain, Total | 284 | 27134 | 1461645 bu | |
| Barley | 3 | 65 | 5967 bu | |
| Oats | 11 | 237 | 12578 bu | |
| Popcorn | 5 | 548 | 1643000 lbs, shelled | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 417 | 93962 | 4358129 bu | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 209 | 8164 | 23088 tons, dry | |
| Alfalfa Hay | 138 | 3899 | 13007 tons, dry | |
| Small Grain Hay | 10 | 322 | 486 tons, dry | |
| Tame Hay | 92 | 3111 | 7576 tons, dry | |
| Wild Hay | 11 | 657 | 1675 tons dry | |
| Grass Silage | 6 | 175 | 1031 tons, grn | |
| Corn for Silage | 29 | 1107 | 18971 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Cantaloupes | 5 | D | ||
| Sweet Peppers | 3 | 1 | ||
| Pumpkins | 7 | 71 | ||
| Sweet Corn | 9 | 126 | ||
| Tomatoes | 6 | 2 | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 7 | D | 1175 trees | |
| Strawberries | 3 | D | 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 | 22 | 110476 | 495 | 1614 |
| Nursery, Floriculture, Vegetable and Flower Seed Crops | 5 | X | D | X |
| Florculture Crops | 11 | 99400 | D | 702 |
| Bedding/Garden Plants | 10 | D | D | D |
| Cut Christmas Trees Harvested | 7 | X | 20 | 134 |
| Nursery Crops | 6 | D | 145 | 403 |
| Other Nursery and Greenhouse Crops | 6 | D | 85 | 29 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.