- Casual Dining Restaurants, Huntington
- Catholic Churches, Huntington
- Central American Restaurants, Huntington
- Church Of Jesus Christ Of Latter Day Saints, Huntington
- Churches 1 Of 3, Huntington
- City & County Administrative Agencies, Huntington
- City & County Government, Huntington
- CNC Machine Shop, Huntington
- Coal & Coke, Huntington
- Coal Miner & Shippers, Huntington - Coal Mining
- Community Services, Huntington
- Computer & Laptop Repair, Huntington - PC Repair Services
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- Computer & Software Stores, Huntington
- Computer Repair, Huntington
- Computer Stores, Huntington
- Conservation Contractors, Huntington
- Construction, Huntington
- Consultants & Services, Huntington
- Convenience Stores, Huntington
- Crane Services, Huntington
- Cranes Hoisting & Rigging Service, Huntington - Crane Rental Service
- Credit Unions, Huntington
- Crude Petroleum & Natural Gas, Huntington
- Custom Parts & Accessories, Huntington
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