- Sales & Marketing Consultant, Newtown Square
- Savings & Loan Associations, Newtown Square
- Savings Banks, Newtown Square
- Seafood Restaurants, Newtown Square
- Secondary Schools, Newtown Square
- Secretarial & Court Reporting Services, Newtown Square
- Security & Surveillance System & Equipment, Newtown Square
- Security Alarm Systems - Home & Business, Newtown Square
- Security Brokers & Dealers, Newtown Square
- Security Control Systems & Monitoring, Newtown Square - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Investigative Services, Newtown Square
- Security Services, Newtown Square
- Senior Citizens Service & Health Organizations, Newtown Square
- Sewer & Drain Cleaning & Repair, Newtown Square - Drain Cleaner & Installation Services
- Sewer Construction Contractors, Newtown Square - Sewer Line, Pipe Installation & Repair Services
- Shoe Stores, Newtown Square - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Newtown Square
- Siding Contractors, Newtown Square - Vinyl Siding, Wood, Metal & Aluminum Siding Contractors - Installation & Repair
- Siding Materials, Newtown Square
- Signs, Newtown Square
- Skateboard Parks & Rinks, Newtown Square
- Skating Rink & Hockey Operation Services, Newtown Square
- Skin Care & Cosmetology Salons, Newtown Square
- Skin Care Products & Treatments, Newtown Square
- Smoking Cessation Treatment Centers & Information Services, Newtown Square
- Snacks & Desserts, Newtown Square
- Snow Removal Services, Newtown Square - Snow Plow Service
- Social Clubs & Organizations, Newtown Square
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- Social Services & Welfare, Newtown Square
- Softball Clubs, Newtown Square
- Special Events & Party Supply Rental, Newtown Square
- Special Interest Schools Or Instruction, Newtown Square
- Specialty Stores, Newtown Square
- Speech & Hearing Specialists, Newtown Square
- Sporting Goods Stores, Newtown Square
- Sports & Recreational Services, Newtown Square
- Sports Clubs, Newtown Square
- Sports Medicine, Newtown Square - Doctors, Physicians & Surgeons
- Sports Schools & Training Camps, Newtown Square
- Staffing & Support Services, Newtown Square
- State Government, Newtown Square
- Stationery & Office Supplies, Newtown Square
- Steak House Restaurants, Newtown Square
- Stock & Bond Brokers & Dealers, Newtown Square
- Stocks & Bond Brokers, Newtown Square
- Storm Doors & Windows, Newtown Square
- Structural Steel Erection, Newtown Square
- Stucco Siding Contractors, Newtown Square - Stucco Repair & Installation
- Stucco Siding, Granite & Grouting Contractors, Newtown Square
- Stucco Stone, Newtown Square
- Substance Abuse Outpatient Clinics, Newtown Square
- Swimming Lessons & Classes, Newtown Square
- Swimming Pool, Sauna & Spa Contractors, Newtown Square
- Swimming Pools Contractors, Newtown Square - Install Inground - Above Ground Pools
- Swimming Pools Repair, Service, Supplies, Sale & Installation, Newtown Square
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