- Safety & Security Systems & Consultants, Shippensburg
- Sales & Marketing Consultant, Shippensburg
- Sand Gravel & Aggregate, Shippensburg
- Sandblasting, Shippensburg - General Contractors
- Sandwich Shop Restaurants, Shippensburg
- Savings & Loans Institutions, Shippensburg
- Savings Banks, Shippensburg
- Sawmill, Paper & Woodworking Supplies, Machinery & Equipment, Shippensburg
- Scaffolding & Aerial Lifts, Shippensburg
- Scrapbooks & Scrapbook Supplies, Shippensburg
- Screen Printing, Shippensburg
- Seafood Restaurants, Shippensburg
- Secondary Schools, Shippensburg
- Security Brokers & Dealers, Shippensburg
- Security Consultants, Shippensburg
- Self Defense Programs, Shippensburg
- Septic Tank Pumping & Cleaning, Shippensburg - Septic Systems
- Septic Tanks & Septic Systems Contractors, Shippensburg - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Shippensburg - Wholesale, Dealers & Suppliers
- Service Establishment Supplies & Equipment, Shippensburg
- Service Industry Manufacturers Machinery, Shippensburg
- Sewer & Drain Cleaning & Repair, Shippensburg - Drain Cleaner & Installation Services
- Sewer Cleaning Equipment & Supplies, Shippensburg - Sewer Builders
- Shipping Service, Shippensburg
- Shopping & Shopping Services, Shippensburg
- Small Appliances, Shippensburg
- Snacks & Desserts, Shippensburg
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- Snow Removal Services, Shippensburg - Snow Plow Service
- Social Clubs & Organizations, Shippensburg
- Social Services & Welfare, Shippensburg
- Societies & Foundation Associations, Shippensburg
- Special Events & Party Supply Rental, Shippensburg
- Speciality Food Stores, Shippensburg
- Specialty Animal Services, Shippensburg
- Specialty Stores, Shippensburg
- Speech & Hearing Specialists, Shippensburg
- Sporting Goods Equipment Rental, Shippensburg
- Sporting Goods Stores, Shippensburg
- Sports & Recreational Services, Shippensburg
- State Government, Shippensburg
- Steel & Metal Goods, Shippensburg - Steel Distributors
- Steel Manufacturers, Shippensburg
- Stock & Bond Brokers & Dealers, Shippensburg
- Stocks & Bond Brokers, Shippensburg
- Stone & Rock Quarry, Shippensburg - Gravel Pit, Shale, Granite, Limestone, Crushed Rock, etc
- Storage Containers, Shippensburg
- Store Fixtures, Shippensburg
- Support Services, Shippensburg
- Surveyor Services, Shippensburg - Surveying Service
- Swimming, Shippensburg
- Swimming Pool, Sauna & Spa Contractors, Shippensburg
- Swimming Pools Contractors, Shippensburg - Install Inground - Above Ground Pools
- Swimming Pools Repair, Service, Supplies, Sale & Installation, Shippensburg
- Swimming Pools Supplies, Equipment & Accessories, Shippensburg
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