Class C: Other primary industries
- 167 : Field Crop, Fruit, and Vegetable Farms
- Wheat Farms (C-167-01)
- Small-grain Farms (C-167-02)
- Oilseed Farms (C-167-03)
- Grain Corn Farms (C-167-04)
- Forage, Seed, and Hay Farms (C-167-05)
- Dry Field Pea and Bean Farms (C-167-06)
- Other Field Crop Farms (C-167-07)
- Field Crop Combination Farms (C-167-08)
- Livestock, Field Crop, and Horticultural Combination Farms (C-167-09)
- Potato Farms (C-167-10)
- Fruit Farms (C-167-11)
- Grape Growers (C-167-12)
- Other Vegetable Farms (C-167-13)
- Fruit and Vegetable Combination Farms (C-167-14)
- 174 : Tobacco and Mushroom Farms
- 181 : Fishing and Miscellaneous Farming
- 184 : Poultry Farms and Agricultural Services
- Veterinary Services (C-184-01)
- Farm Animal Breeding Services (C-184-02)
- Other Services Incidental to Livestock Specialties (C-184-03)
- Soil Preparation, Planting, and Cultivating Services (C-184-04)
- Crop Dusting and Spraying Services (C-184-05)
- Harvesting, Baling, and Threshing Services (C-184-06)
- Other Services Incidental to Agriculture (C-184-07)
- Services Incidental to Fishing (C-184-08)
- Wildlife Preservation and Research (C-184-09)
- Poultry and Egg Farm Operations (C-184-10)
- Poultry Services (C-184-11)
- 190 : Landscaping and Related Services
