- Cafe Restaurants, Jacksonville
- Candy Manufacturers, Jacksonville
- Candy, Nut & Confectionery Wholesale & Retail, Jacksonville - Candy Stores
- Car Detailing & Wash Service, Jacksonville - Auto Detailing
- Car Rental, Jacksonville - Rental Cars & Lease Service
- Car Tune Up Service, Jacksonville - Auto Tune Up
- Car Wash, Cleaning, Wax & Polish Service, Jacksonville
- Cardiologists, Jacksonville - Heart Doctors, Physicians & Surgeons (Cardiology)
- Carpet, Rug & Linoleum Flooring Dealers, Jacksonville
- Cars, Truck, Van & SUV Car Dealerships, Jacksonville - Auto Dealers
- Casual Dining Restaurants, Jacksonville
- Caterers Food Services, Jacksonville
- Catholic Churches, Jacksonville
- Cellular & Mobile Phone Equipment & Systems Installation, Repair & Service, Jacksonville
- Cellular & Mobile Phone Service, Jacksonville
- Central American Restaurants, Jacksonville
- Chambers Of Commerce, Jacksonville
- Charitable & Non-Profit Organizations, Jacksonville
- Check Advance Service, Jacksonville
- Check Cashing Services, Jacksonville
- Chemical Product Manufacturers, Jacksonville
- Chemicals & Related Products, Jacksonville
- Chicken Restaurants, Jacksonville
- Child Care & Day Care Services, Jacksonville
- Chinese Restaurants, Jacksonville
- Chiropractor, Jacksonville
- Christian Churches, Jacksonville
- Christian Literature & Supplies - Christian Book Store, Jacksonville
- Church Of Christ, Jacksonville
- Church Of God, Jacksonville
- Church Of The Nazarene, Jacksonville
- Churches 1 Of 3, Jacksonville
- Churches 2 Of 3, Jacksonville
- Churches 3 Of 3, Jacksonville
- Cigar, Cigarette & Tobacco Store & Supplies, Jacksonville
- City & County Administrative Agencies, Jacksonville
- City & County Government, Jacksonville
- City & County Law Enforcement, Jacksonville
- Civil Attorneys & Lawyers, Jacksonville
- Civil Rights Attorneys & Lawyers, Jacksonville
- Civil Rights Lawyers & Attorneys, Jacksonville
- Cleaning & Restoration Contractors, Including Sandblasting, Jacksonville
- Cleaning Chemical Compounds, Jacksonville
- Cleaning Polishes, Jacksonville
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- Clinics, Jacksonville
- Clothing Stores, Jacksonville - Clothes & Accessories
- CNC Machine Shop, Jacksonville
- Colleges & Universities, Jacksonville
- Commercial & Industrial Laundry, Jacksonville
- Commercial Equipment, Jacksonville
- Communications Services, Jacksonville
- Community & Recreational Facilities, Jacksonville
- Community Church, Jacksonville
- Community Churches, Jacksonville
- Community Services, Jacksonville
- Composting Facilities, Jacksonville
- Computer & Audio Visual Services, Jacksonville
- Computer & Equipment Rental & Leasing, Jacksonville
- Computer & Laptop Repair, Jacksonville - PC Repair Services
- Computer Repair, Jacksonville
- Computer Services, Jacksonville
- Computer System Consultants, Jacksonville - IT Consulting Services
- Computer System Designers & Consultants, Jacksonville
- Concrete Contractors, Jacksonville - Concrete Construction & Concrete Companies
- Construction, Jacksonville
- Construction Companies, Jacksonville
- Construction Equipment Rental & Leasing, Jacksonville
- Construction Estimators, Jacksonville
- Construction Services, Jacksonville
- Consultants & Services, Jacksonville
- Contractor Equipment & Supplies, Jacksonville - Construction Equipment & Machinery
- Contractors Equipment & Supplies - Rental & Leasing, Jacksonville
- Convalescent Homes Placement Services, Jacksonville - Convalescent Care
- Convenience Stores, Jacksonville
- Convention Consultants & Management, Jacksonville
- Convention Services - Other, Jacksonville
- Cooking Services, Jacksonville
- Cosmetics, Jacksonville
- Cosmetics, Toiletries, Perfumes & Beauty Supply Stores, Jacksonville
- Counseling Professionals, Jacksonville
- Country Cooking Restaurants, Jacksonville
- County Police, Jacksonville
- Crane Services, Jacksonville
- Cranes Hoisting & Rigging Service, Jacksonville - Crane Rental Service
- Crime Prevention Services, Jacksonville
- Crude Petroleum & Natural Gas, Jacksonville
- Custom Made Boots & Shoes, Jacksonville
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