- Racing Including Track Operations, Jefferson
- Radio & Tv Communications Equipment Manufacturers, Jefferson
- Radiologists, Jefferson - Radiology Doctors, Physicians & Surgeons
- Ready Mix Concrete, Jefferson - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Jefferson
- Real Estate, Jefferson - Agent, Broker & Companies
- Real Estate Appraisers & Consulting Services, Jefferson
- Real Estate Attorneys & Lawyers, Jefferson
- Real Estate Attorneys & Lawyers, Jefferson
- Real Estate Consultants, Jefferson
- Real Estate Lawyers & Attorneys, Jefferson
- Real Estate Services, Jefferson
- Recreational Equipment & Supplies Companies, Jefferson
- Recreational Services, Jefferson
- Refrigeration Repair & Service, Jefferson - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, Jefferson - Fridge
- Rehabilitation Centers, Products & Services, Jefferson
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- Rehabilitation Specialists, Jefferson
- Religious Education, Jefferson
- Religious Organizations, Jefferson
- Religious Practitioners, Jefferson
- Repair Services, Jefferson
- Residential, Jefferson
- Residential Apartments, Jefferson
- Residential Care Facilities, Jefferson
- Residential Construction Contractors, Jefferson - General Contractors
- Restaurants/Food & Dining, Jefferson
- Retirement Communities & Home, Assisted Living & Apartments, Jefferson
- Road Construction, Jefferson - Companies & Contractors
- Road Construction & Repair Contractors, Jefferson
- Roadside Assistance, Road Service & Towing Service, Jefferson
- Roofing Consultants, Jefferson - Roofing Companies
- Roofing Contractors, Jefferson - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Jefferson
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