- Racing Car Supplies, Rockford
- Real Estate, Rockford - Agent, Broker & Companies
- Real Estate Appraiser, Rockford - Appraisal Services
- Real Estate Appraisers & Consulting Services, Rockford
- Real Estate Attorneys & Lawyers, Rockford
- Real Estate Attorneys & Lawyers, Rockford
- Real Estate Consultants, Rockford
- Real Estate Developers, Rockford
- Real Estate Lawyers & Attorneys, Rockford
- Real Estate Management, Rockford
- Real Estate Services, Rockford
- Recording Studio Service - Sound & Video, Rockford
- Recreational Equipment Repair & Service, Rockford
- Recreational Organizations, Rockford
- Recycling Scrap & Waste Materials, Rockford - Scrap Metal, etc
- Reformed Churches, Rockford
- Rehabilitation Centers, Products & Services, Rockford
- Rehabilitation Specialists, Rockford
- Rehabilitational Job Training Services, Rockford
- Religious Education, Rockford
- Religious Goods & Church Supplies Stores, Rockford
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- Religious Organizations, Rockford
- Religious Practitioners, Rockford
- Repair Services, Rockford
- Residential, Rockford
- Residential Apartments, Rockford
- Residential Architectural Designers, Rockford
- Residential Construction Contractors, Rockford - General Contractors
- Resorts & Hotels, Rockford
- Restaurant & Lounge, Bar, Or Pub, Rockford
- Restaurants/Food & Dining, Rockford
- Retail Book Stores, Rockford
- Retirement Communities & Home, Assisted Living & Apartments, Rockford
- Riding & Rodeo Services, Rockford
- Risk Management Consultants, Rockford
- Roadside Assistance, Road Service & Towing Service, Rockford
- Roofing Consultants, Rockford - Roofing Companies
- Roofing Contractors, Rockford - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Rockford
- RV & Campers Repair & Service, Rockford
- RV Repair, Rockford - Recreational Vehicle
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