- Radio & Television Repair Shops , Chicago Heights - TV Repair
- Radio Communications Equipment & Systems , Chicago Heights
- Radiotelephone Communications, Chicago Heights
- Railroad, Chicago Heights - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, Chicago Heights
- Railroad Car Leasing Services, Chicago Heights
- Railroad Companies, Chicago Heights
- Railroad Contractors, Chicago Heights
- Railroad Services, Chicago Heights
- Ready Mix Concrete, Chicago Heights - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Chicago Heights
- Real Estate, Chicago Heights - Agent, Broker & Companies
- Real Estate Management, Chicago Heights
- Real Estate Services, Chicago Heights
- Record Labels, Chicago Heights - Record Companies
- Recycling Drop-Off Centers, Chicago Heights
- Recycling Scrap & Waste Materials, Chicago Heights - Scrap Metal, etc
- Refrigerated Storage & Warehouse, Chicago Heights - Warehousing
- Refrigeration Repair & Service, Chicago Heights - Ac, Freezer, Refrigerator Repair
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- Refrigerator Sales, Service & Repair, Chicago Heights - Fridge
- Rehabilitation Centers, Products & Services, Chicago Heights
- Rehabilitation Specialists, Chicago Heights
- Religious Organizations, Chicago Heights
- Relocation Services, Chicago Heights
- Repair Services, Chicago Heights
- Research & Development Labs, Chicago Heights - Laboratories
- Research Service Libraries, Chicago Heights
- Research Services, Chicago Heights
- Residential, Chicago Heights
- Residential Apartments, Chicago Heights
- Residential Care Facilities, Chicago Heights
- Residential Construction Contractors, Chicago Heights - General Contractors
- Restaurants/Food & Dining, Chicago Heights
- Restoration Church, Chicago Heights
- Restoration Contractors, Chicago Heights
- Roofing Consultants, Chicago Heights - Roofing Companies
- Roofing Contractors, Chicago Heights - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Chicago Heights
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