Total population (1996 census): 70,022
County seat: St. Clairsville
Crop Statistics (1997 US Census of Agriculture)
| Cereals | Farms | Acres | Yield | |
| Maize=Corn | 109 | 1834 | 151175 bu | |
| Wheat for Grain, Total | 99 | 4102 | bu | |
| Barley | 5 | 34 | 1346 bu | |
| Oats | 55 | 606 | 27640 bu | |
| Grain Legumes | Farms | Acres | Yield | |
| Soybean | 3 | D | D | |
| Forages | Farms | Acres | Yield | |
| Total Hay* | 517 | 38010 | 73179 tons, dry | |
| Alfalfa Hay | 303 | 15329 | 35573 tons, dry | |
| Small Grain Hay | 20 | 195 | 301 tons, dry | |
| Tame Hay | 278 | 19180 | 32301 tons, dry | |
| Wild Hay | 66 | 1784 | 2579 tons dry | |
| Grass Silage | 34 | 1522 | 7279 tons, grn | |
| Corn for Silage | 37 | 723 | 12355 tons, grn | |
| Vegetables | Farms | Acres | Yield | |
| Potatoes | 3 | 1 | 30 bu | |
| Pumpkins | 3 | 7 | ||
| Sweet Corn | 6 | D | ||
| Fruits | Farms | Acres | Yield | |
| Apples | 9 | 82 | D | |
| Cherries, Total | 3 | 1 | D | |
| Cherries, Not Specified | 3 | 1 | D | |
| Grapes | 5 | 2 | 494 vines | |
| Peaches | 5 | 3 | D | |
| Strawberries | 3 | D | 11143 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 | 124984 | 181 | 790 |
| Florculture Crops | 7 | 124984 | D | 409 |
| Bedding/Garden Plants | 5 | 71984 | D | 301 |
| Potted Flowering Plants | 4 | D | D | D |
| Cut Christmas Trees Harvested | 11 | X | 111 | 379 |
*Alfalfa, grass silage, green chops etc.
D=Withheld to avoid disclosing data for individual farms.
X=Not applicable.