- Sandwich Shop Restaurants, Jefferson
- Screen Printing, Jefferson
- Secondary Schools, Jefferson
- Security & Surveillance System & Equipment, Jefferson
- Security Brokers & Dealers, Jefferson
- Security Services, Jefferson
- Senior Citizens Information & Services, Jefferson
- Senior Citizens Service & Health Organizations, Jefferson
- Septic Tank Installation & Repair, Jefferson - Septic Systems
- Septic Tank Pumping & Cleaning, Jefferson - Septic Systems
- Septic Tanks & Septic Systems Contractors, Jefferson - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Sewing & Yarn Stores & Supplies, Jefferson
- Shoe Stores, Jefferson - Mens, Womens & Kids Shoes
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- Shopping & Shopping Services, Jefferson
- Skin Care & Cosmetology Salons, Jefferson
- Skin Care Products & Treatments, Jefferson
- Snacks & Desserts, Jefferson
- Social Services & Welfare, Jefferson
- Societies & Foundation Associations, Jefferson
- Specialty Stores, Jefferson
- Staffing & Support Services, Jefferson
- State Government, Jefferson
- Stitching Services, Jefferson
- Stocks & Bond Brokers, Jefferson
- Support Services, Jefferson
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