- Racing Including Track Operations, East Saint Louis
- Radiator Coolant & Solvents, East Saint Louis - Engine Coolant
- Radio Stations & Broadcasting Companies, East Saint Louis
- Radiotelephone Communications, East Saint Louis
- Railroad, East Saint Louis - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, East Saint Louis
- Railroad Car Leasing Services, East Saint Louis
- Railroad Companies, East Saint Louis
- Railroad Contractors, East Saint Louis
- Railroad Equipment & Supplies Manufacturers, East Saint Louis
- Railroad Services, East Saint Louis
- Ready Mix Concrete, East Saint Louis - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, East Saint Louis
- Real Estate, East Saint Louis - Agent, Broker & Companies
- Real Estate Agent Referral Services, East Saint Louis
- Real Estate Developers, East Saint Louis
- Real Estate Management, East Saint Louis
- Real Estate Referral & Information Services, East Saint Louis
- Real Estate Rentals, East Saint Louis
- Real Estate Services, East Saint Louis
- Records, Tapes, CDs - Used & Vintage, East Saint Louis
- Recycling Drop-Off Centers, East Saint Louis
- Recycling Pick Up Services, East Saint Louis
- Recycling Scrap & Waste Materials, East Saint Louis - Scrap Metal, etc
- Refrigerated Storage & Warehouse, East Saint Louis - Warehousing
- Refrigerated Truck, East Saint Louis
- Refrigeration & Cooling Equipment, Parts & Supplies , East Saint Louis - Water Cooler, Ice Machine, Beverage Dispenser, etc
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- Refrigeration Repair & Service, East Saint Louis - Ac, Freezer, Refrigerator Repair
- Refuse Collection & Disposal Services, East Saint Louis
- Relief Organizations, East Saint Louis
- Religious Education, East Saint Louis
- Religious Goods & Church Supplies Stores, East Saint Louis
- Religious Organizations, East Saint Louis
- Rental & Leasing Business Equipment, East Saint Louis
- Repair Services, East Saint Louis
- Residential, East Saint Louis
- Residential Apartments, East Saint Louis
- Residential Care Facilities, East Saint Louis
- Residential Landfills, East Saint Louis
- Resins Wholesale & Retail, East Saint Louis - Plastic Raw Materials
- Restaurant & Lounge, Bar, Or Pub, East Saint Louis
- Restaurant Equipment, East Saint Louis
- Restaurant Equipment & Supplies, East Saint Louis
- Restaurant Management & Consulting, East Saint Louis - Food Facilities Consultants
- Restaurant Supplies & Equipment, East Saint Louis
- Restaurants/Food & Dining, East Saint Louis
- Retail Book Stores, East Saint Louis
- Retirement Communities & Home, Assisted Living & Apartments, East Saint Louis
- Riding & Rodeo Services, East Saint Louis
- Roofing Consultants, East Saint Louis - Roofing Companies
- Roofing Contractors, East Saint Louis - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, East Saint Louis
- Roper Appliances Household Major, East Saint Louis
- Rv Parks, East Saint Louis
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