- Sand Gravel & Aggregate, Lawrenceville
- Search & Rescue, Lawrenceville
- Security & Surveillance System & Equipment, Lawrenceville
- Security Services, Lawrenceville
- Senior Citizens Service & Health Organizations, Lawrenceville
- Septic Drainfields, Lawrenceville
- Septic Tanks & Septic Systems Contractors, Lawrenceville - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Lawrenceville - Wholesale, Dealers & Suppliers
- Sheriff's Department, Lawrenceville
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- Shoe Stores, Lawrenceville - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Lawrenceville
- Social Services & Welfare, Lawrenceville
- Societies & Foundation Associations, Lawrenceville
- Specialty Animal Services, Lawrenceville
- Specialty Stores, Lawrenceville
- State Government, Lawrenceville
- Surveyor Services, Lawrenceville - Surveying Service
- Surveyors, Lawrenceville
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