- Sandblasting, South Deerfield - General Contractors
- School Bus Transportation Service, South Deerfield
- Scientific Equipment & Services, South Deerfield
- Scientific Services, South Deerfield
- Scrap & Waste Materials, South Deerfield
- Secretarial & Court Reporting Services, South Deerfield
- Septic Tank Pumping & Cleaning, South Deerfield - Septic Systems
- Septic Tanks & Systems, South Deerfield - Wholesale, Dealers & Suppliers
- Sewing & Yarn Stores & Supplies, South Deerfield
- Sheet Metal, South Deerfield
- Shopping & Shopping Services, South Deerfield
- Siding Contractors, South Deerfield - Vinyl Siding, Wood, Metal & Aluminum Siding Contractors - Installation & Repair
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- Snacks & Desserts, South Deerfield
- Social Services & Welfare, South Deerfield
- Solar Energy Companies - Contractors, South Deerfield - Solar Panel Installation - Solar Power Systems
- Solar Energy Equipment & Systems - Service & Repair, South Deerfield - Solar Power Systems
- Special Interest Schools Or Instruction, South Deerfield
- Specialty Stores, South Deerfield
- Stationery & Office Supplies, South Deerfield
- Steel Manufacturers, South Deerfield
- Structural Engineer, South Deerfield
- Swimming Pool, Sauna & Spa Contractors, South Deerfield
- Swimming Pools Contractors, South Deerfield - Install Inground - Above Ground Pools
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