- Cafe Restaurants, Newport Coast
- Casual Dining Restaurants, Newport Coast
- Caterers Food Services, Newport Coast
- Central American Restaurants, Newport Coast
- China Crystal & Glassware Decorations Stores, Newport Coast
- Clothing Stores, Newport Coast - Clothes & Accessories
- Clubs - Private, Newport Coast
- Coaching Business & Personal, Newport Coast
- Coffee, Espresso & Tea House Restaurants, Newport Coast
- Communications Consultants, Newport Coast
- Community & Recreational Facilities, Newport Coast
- Community Centers, Newport Coast
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- Community Services, Newport Coast
- Computer & Audio Visual Services, Newport Coast
- Computer & Laptop Repair, Newport Coast - PC Repair Services
- Computer & Software Stores, Newport Coast
- Computer Programming & Software Development Services, Newport Coast
- Computer Repair, Newport Coast
- Computer Stores, Newport Coast
- Construction, Newport Coast
- Construction Services, Newport Coast
- Consultants & Services, Newport Coast
- Counseling Services, Newport Coast
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