- Sand Gravel & Aggregate, Newport
- Sandwich Shop Restaurants, Newport
- Satellite Dish Antennas & Equipment Dealers, Newport
- Satellite Technology & Space Research, Newport
- Savings Banks, Newport
- Sawmill & Planing Mills, Newport
- Sawmill Supplies & Equipment Repair, Newport
- School Bus Transportation Service, Newport
- Security & Surveillance System & Equipment, Newport
- Security Alarm Systems - Home & Business, Newport
- Security Control Systems & Monitoring, Newport - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Services, Newport
- Senior Citizens Service & Health Organizations, Newport
- Septic Tank Site Evaluation & Design Consultants, Newport
- Septic Tanks & Septic Systems Contractors, Newport - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Newport - Wholesale, Dealers & Suppliers
- Sewer Construction Contractors, Newport - Sewer Line, Pipe Installation & Repair Services
- Sheet Metal Fabricators & Ductwork Contractors, Newport
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- Shirts & T-Shirts, Newport
- Shopping & Shopping Services, Newport
- Signs, Newport
- Snow Removal Services, Newport - Snow Plow Service
- Social Security And Disability Attorneys & Lawyers, Newport
- Social Security And Disability Lawyers & Attorneys, Newport
- Social Services & Welfare, Newport
- Societies & Foundation Associations, Newport
- Specialty Communication Companies & Services, Newport
- Specialty Stores, Newport
- Sporting & Recreational Camps, Newport
- Sporting Goods Equipment Rental, Newport
- Sporting Goods Stores, Newport
- State Government, Newport
- Structural Engineer, Newport
- Support Services, Newport
- Surveyor Services, Newport - Surveying Service
- Swimming Pools Supplies, Equipment & Accessories, Newport
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