- Radio & Television Repair Shops , Columbia - TV Repair
- Radio Equipment & Parts Stores & Dealers, Columbia
- Radio Stations & Broadcasting Companies, Columbia
- Rape Victim Services, Columbia
- Ready Mix Concrete, Columbia - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Columbia
- Real Estate, Columbia - Agent, Broker & Companies
- Real Estate Services, Columbia
- Recording Studio - Equipment & Rental, Columbia
- Recycling Drop-Off Centers, Columbia
- Recycling Scrap & Waste Materials, Columbia - Scrap Metal, etc
- Refuse Collection & Disposal, Columbia
- Refuse Systems & Garbage Disposal, Columbia
- Rehabilitational Job Training Services, Columbia
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- Religious Organizations, Columbia
- Religious Practitioners, Columbia
- Repair Services, Columbia
- Residential, Columbia
- Residential Apartments, Columbia
- Residential Care Facilities, Columbia
- Restaurants/Food & Dining, Columbia
- Retirement Communities & Home, Assisted Living & Apartments, Columbia
- Road Construction, Columbia - Companies & Contractors
- Road Construction & Repair Contractors, Columbia
- Roofing Consultants, Columbia - Roofing Companies
- Roofing Contractors, Columbia - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Royalties Oil & Mineral, Columbia
- Rv Parks, Columbia
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