- Canoe & Kayak Rental, Smithfield Township
- Canoes & Kayaks, Smithfield Township - Equipment, Gear, PFD, Paddles & Accessories
- Carpet, Rug & Linoleum Flooring Dealers, Smithfield Township
- Cars, Truck, Van & SUV Car Dealerships, Smithfield Township - Auto Dealers
- Casual Dining Restaurants, Smithfield Township
- Caterers Food Services, Smithfield Township
- Chemicals & Related Products, Smithfield Township
- Chimney & Fireplace Construction Contractors, Smithfield Township - Installation, Cleaning & Repair Services
- Chimney Cleaning & Repair, Smithfield Township - Fireplace - Chimney Sweep Services
- Churches 1 Of 3, Smithfield Township
- Churches 3 Of 3, Smithfield Township
- City & County Administrative Agencies, Smithfield Township
- City & County Government, Smithfield Township
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- Clothing & Accessories Custom Made, Smithfield Township
- Clothing Stores, Smithfield Township - Clothes & Accessories
- Colleges & Universities, Smithfield Township
- Combustibles & Explosives, Smithfield Township
- Community Services, Smithfield Township
- Concrete Contractors, Smithfield Township - Concrete Construction & Concrete Companies
- Construction, Smithfield Township
- Construction Services, Smithfield Township
- Consultants & Services, Smithfield Township
- Convenience Stores, Smithfield Township
- Custom Clothing, Smithfield Township
- Custom Sewing & Alterations, Smithfield Township
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