- Sandwich Shop Restaurants, Quarryville
- Savings & Loan Associations, Quarryville
- Savings Banks, Quarryville
- Sawmill & Planing Mills, Quarryville
- Sawmill Supplies & Equipment Repair, Quarryville
- School - Christian, Quarryville
- Scrap & Waste Materials, Quarryville
- Secondary Schools, Quarryville
- Senior Citizens Service & Health Organizations, Quarryville
- Septic & Cesspool Equipment & Supplies, Quarryville
- Septic Tank Installation & Repair, Quarryville - Septic Systems
- Septic Tank Pumping & Cleaning, Quarryville - Septic Systems
- Septic Tanks & Septic Systems Contractors, Quarryville - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Sewing Machine Repair & Service, Quarryville
- Shoe Dyers, Quarryville
- Shoe Repair Shops, Quarryville
- Shoe Stores, Quarryville - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Quarryville
- Signs, Quarryville
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- Skin Care & Cosmetology Salons, Quarryville
- Skin Care Products & Treatments, Quarryville
- Snacks & Desserts, Quarryville
- Social Services & Welfare, Quarryville
- Societies & Foundation Associations, Quarryville
- Special Interest Schools Or Instruction, Quarryville
- Specialty Animal Services, Quarryville
- Specialty Stores, Quarryville
- Sporting Goods Stores, Quarryville
- Sports Clubs, Quarryville
- Stadiums, Arenas, Coliseums & Athletic Fields, Quarryville
- State Government, Quarryville
- Steel & Metal Goods, Quarryville - Steel Distributors
- Steel Manufacturers, Quarryville
- Stove, Oven, Range & Cooktop Parts & Supplies, Quarryville
- Substance Abuse Clinics, Quarryville - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Surveying Engineer, Quarryville
- Surveyor Services, Quarryville - Surveying Service
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