- Cafe Restaurants, Whitinsville
- Calligraphy Service, Whitinsville - Calligrapher
- Car Detailing & Wash Service, Whitinsville - Auto Detailing
- Car Wash, Cleaning, Wax & Polish Service, Whitinsville
- Carpenters, Whitinsville - Carpentry Contractors
- Carpet Rug & Upholstery Cleaners, Whitinsville
- Casual Dining Restaurants, Whitinsville
- Catalog Services, Whitinsville
- Catalog, Mail-Order & Electronic Shopping, Whitinsville
- Catalogs, Whitinsville
- Catalogs & Supplies, Whitinsville
- Caterers Food Services, Whitinsville
- Chambers Of Commerce, Whitinsville
- Child Care & Day Care Services, Whitinsville
- Childrens After School Programs, Whitinsville
- Chimney & Fireplace Construction Contractors, Whitinsville - Installation, Cleaning & Repair Services
- Chimney Cleaning & Repair, Whitinsville - Fireplace - Chimney Sweep Services
- Chiropractor, Whitinsville
- Christian Churches, Whitinsville
- Churches 1 Of 3, Whitinsville
- City & County Government, Whitinsville
- City & County Law Enforcement, Whitinsville
- Cleaning & Maintenance Services, Whitinsville
- Clinics, Whitinsville
- Coffee, Whitinsville
- Coffee, Espresso & Tea House Restaurants, Whitinsville
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- Commercial & Industrial Laundry, Whitinsville
- Commercial Equipment, Whitinsville
- Community & Recreational Facilities, Whitinsville
- Community Church, Whitinsville
- Community Churches, Whitinsville
- Community Services, Whitinsville
- Computer & Software Stores, Whitinsville
- Computer Networks, Whitinsville - Design & Systems
- Computer Repair, Whitinsville
- Computer Software & Services, Whitinsville
- Computer Software Service, Whitinsville
- Condiments & Sauces, Whitinsville
- Congregational Church, Whitinsville
- Construction, Whitinsville
- Construction & Civil Engineer, Whitinsville
- Consultants & Services, Whitinsville
- Contact Lenses, Whitinsville
- Convenience Stores, Whitinsville
- Convention & Meeting Facilities, Whitinsville - Meeting Rooms
- Cooling System & Parts, Whitinsville - Antifreeze, Radiator, Water Pump, Fan, Hoses, Belts, etc
- County Police, Whitinsville
- Cremation Services, Supplies & Equipment, Whitinsville
- Cruise Agents, Whitinsville - Travel Agents
- Cruise Lines, Whitinsville - Cruises
- Curtain & Blanket Cleaners, Whitinsville
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