- Salvation Army, Jerseyville
- Sandwich Shop Restaurants, Jerseyville
- Satellite Dish Antennas & Equipment Dealers, Jerseyville
- Satellite TV Service, Jerseyville
- Sawmill & Planing Mills, Jerseyville
- Sawmill Supplies & Equipment Repair, Jerseyville
- Screen Printing, Jerseyville
- Seafood Restaurants, Jerseyville
- Secondary Schools, Jerseyville
- Secretarial School, Jerseyville
- Security Alarm Systems - Home & Business, Jerseyville
- Security Brokers & Dealers, Jerseyville
- Security Control Systems & Monitoring, Jerseyville - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Services, Jerseyville
- Seed Companies, Jerseyville
- Seeds & Bulbs Wholesale & Growers, Jerseyville
- Septic Tank Installation & Repair, Jerseyville - Septic Systems
- Septic Tank Pumping & Cleaning, Jerseyville - Septic Systems
- Septic Tanks & Septic Systems Contractors, Jerseyville - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Jerseyville - Wholesale, Dealers & Suppliers
- Sewage Plant Operation, Jerseyville
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- Sheriff's Department, Jerseyville
- Shoe Stores, Jerseyville - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Jerseyville
- Snacks & Desserts, Jerseyville
- Social Services & Welfare, Jerseyville
- Societies & Foundation Associations, Jerseyville
- Specialty Animal Services, Jerseyville
- Specialty Stores, Jerseyville
- Speech & Hearing Specialists, Jerseyville
- Sporting Goods Stores, Jerseyville
- Staffing & Support Services, Jerseyville
- State Government, Jerseyville
- Stock & Bond Brokers & Dealers, Jerseyville
- Stocks & Bond Brokers, Jerseyville
- Stoves & Furnace Equipment, Jerseyville - Fittings & Repair Parts
- Submarine Sandwich Restaurants, Jerseyville
- Substance Abuse Clinics, Jerseyville - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Surveyor Services, Jerseyville - Surveying Service
- Swimming, Jerseyville
- Swimming Pools Supplies, Equipment & Accessories, Jerseyville
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