- Campgrounds, Portersville
- Casual Dining Restaurants, Portersville
- Caterers Food Services, Portersville
- Cheese Product Manufacturers, Portersville
- Churches 1 Of 3, Portersville
- Churches 2 Of 3, Portersville
- City & County Government, Portersville
- CNC Machine Shop, Portersville
- Community & Recreational Facilities, Portersville
- Community Services, Portersville
- Computer & Audio Visual Services, Portersville
- Computer & Software Stores, Portersville
- Computer Repair, Portersville
- Computer Services, Portersville
- Computer Software & Services, Portersville
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- Computer Software Service, Portersville
- Computer System Consultants, Portersville - IT Consulting Services
- Computer System Designers & Consultants, Portersville
- Concrete, Portersville - Cement & Concrete Products, Suppliers, Companies
- Concrete & Cement, Portersville
- Concrete Construction Forms & Accessories, Portersville
- Concrete Product Manufacturers, Portersville
- Concrete Supplies & Equipment, Portersville - Concrete Grinder, Concrete Pumping, Cement Mixer, etc
- Construction, Portersville
- Consultants & Services, Portersville
- Convenience Stores, Portersville
- Country Cooking Restaurants, Portersville
- Crushed Stone & Rock, Portersville - Crushed Granite, Concrete, Gravel, etc
- Custom Sewing & Alterations, Portersville
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