- Casual Dining Restaurants, Dayton
- Catholic Churches, Dayton
- Cellular & Mobile Phone Service, Dayton
- Child Care & Day Care Services, Dayton
- Chiropractor, Dayton
- Christian Churches, Dayton
- Church Of God, Dayton
- Churches 1 Of 3, Dayton
- City & County Government, Dayton
- City & County Law Enforcement, Dayton
- CNC Machine Shop, Dayton
- Cocktail Lounges, Dayton
- Commercial & Industrial Building Contractors, Dayton
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- Commercial Printing Manufacturers, Dayton
- Communications Services, Dayton
- Community Church, Dayton
- Community Churches, Dayton
- Community Services, Dayton
- Construction, Dayton
- Construction Services, Dayton
- Consultants & Services, Dayton
- Convenience Stores, Dayton
- Convention & Meeting Facilities, Dayton - Meeting Rooms
- County Police, Dayton
- Cruise Agents, Dayton - Travel Agents
- Cruise Lines, Dayton - Cruises
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