- Carpet, Rug & Linoleum Flooring Dealers, Plainville
- Casual Dining Restaurants, Plainville
- Catholic Churches, Plainville
- Cellular & Mobile Phone Equipment & Systems Installation, Repair & Service, Plainville
- Cellular & Mobile Phone Service, Plainville
- Central American Restaurants, Plainville
- Chemical Products, Plainville - Chemical Distributors, Dealers, Wholesale, etc
- Chiropractor, Plainville
- Christian Churches, Plainville
- Church Of The Nazarene, Plainville
- Churches 1 Of 3, Plainville
- Churches 2 Of 3, Plainville
- City & County Administrative Agencies, Plainville
- City & County Government, Plainville
- Cleaning Supplies & Products, Plainville
- Clinics, Plainville
- CNC Machine Shop, Plainville
|
- Commercial Printing Manufacturers, Plainville
- Communications Contractors, Plainville
- Communications Services, Plainville
- Community Services, Plainville
- Concrete Contractors, Plainville - Concrete Construction & Concrete Companies
- Construction, Plainville
- Construction & Civil Engineer, Plainville
- Construction Equipment Rental & Leasing, Plainville
- Construction Services, Plainville
- Consultants & Services, Plainville
- Convenience Stores, Plainville
- Cosmetics, Plainville
- Cosmetics & Perfumes Outlets, Plainville
- Crane Services, Plainville
- Cranes Hoisting & Rigging Service, Plainville - Crane Rental Service
- Crop Planting & Protecting, Plainville - Soil Preparation & Cultivating
- Crude Petroleum & Natural Gas, Plainville
|