- Sales & Marketing Consultant, Newton
- Sandwich Shop Restaurants, Newton
- Satellite Communication Downlinking & Uplinking, Newton
- Satellite Descrambling & Programming Service, Newton
- Satellite Dish Antennas & Equipment Dealers, Newton
- Satellite TV Service, Newton
- Sawmill, Paper & Woodworking Supplies, Machinery & Equipment, Newton
- Scrap & Waste Materials, Newton
- Secondary Schools, Newton
- Security Alarm Systems - Home & Business, Newton
- Security Brokers & Dealers, Newton
- Security Control Systems & Monitoring, Newton - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Guard & Patrol Service, Newton - Bodyguard, Guard Dogs, Etc
- Security Services, Newton
- Semiconductors & Equipment, Newton
- Senior Citizens Information & Services, Newton
- Sewer & Drain Cleaning & Repair, Newton - Drain Cleaner & Installation Services
- Sewer Construction Contractors, Newton - Sewer Line, Pipe Installation & Repair Services
- Sewing & Yarn Stores & Supplies, Newton
- Shoe Dyers, Newton
- Shoe Repair Shops, Newton
- Shoe Stores, Newton - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Newton
- Signs, Newton
- Skating Rink & Hockey Operation Services, Newton
- Ski Shops - Equipment & Supplies Sales & Rental, Newton
- Ski, Snowboard & Snowmobile Shop - Equipment Rental & Services, Newton
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- Snow Removal Services, Newton - Snow Plow Service
- Social Clubs & Organizations, Newton
- Social Services & Welfare, Newton
- Social Workers & Services, Newton
- Societies & Foundation Associations, Newton
- Solar Energy Research Development & Design, Newton
- Special Interest Schools Or Instruction, Newton
- Specialty Animal Services, Newton
- Specialty Stores, Newton
- Sporting Goods Stores, Newton
- Sports Clubs, Newton
- Sports Teams & Franchises, Newton
- Sportswear Clothing Stores, Newton - Sports Clothes
- Sprinkler System Contractors, Newton - Garden & Lawn Sprinkler System Installation & Repair
- Staffing & Support Services, Newton
- Stationery & Office Supplies, Newton
- Stock & Bond Brokers & Dealers, Newton
- Stocks & Bond Brokers, Newton
- Storm Doors & Windows, Newton
- Stress Management & Counseling, Newton
- Structural Engineer, Newton
- Surveyor Services, Newton - Surveying Service
- Swimming Pool Covers & Enclosures, Newton
- Swimming Pools Supplies, Equipment & Accessories, Newton
- Swimwear & Accessories Shops, Newton - Water Sports Equipment
- Synagogues & Temples, Newton
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