- Safety & Security Systems & Consultants, Winterville
- Sand Gravel & Aggregate, Winterville
- Sandwich Shop Restaurants, Winterville
- Satellite Dish Antennas & Equipment Dealers, Winterville
- Savings Banks, Winterville
- School - Christian, Winterville
- Seafood Restaurants, Winterville
- Secondary Schools, Winterville
- Security & Surveillance System & Equipment, Winterville
- Security Alarm Systems - Home & Business, Winterville
- Security Control Systems & Monitoring, Winterville - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Services, Winterville
- Seeds & Bulbs Wholesale & Growers, Winterville
- Septic Tank Pumping & Cleaning, Winterville - Septic Systems
- Shopping & Shopping Services, Winterville
- Shopping Services, Winterville
- Signs, Winterville
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- Snacks & Desserts, Winterville
- Social Clubs & Organizations, Winterville
- Social Services & Welfare, Winterville
- Sound Systems, Microphones & Equipment, Winterville
- Special Events Photographers, Winterville
- Special Interest Schools Or Instruction, Winterville
- Specialty Animal Services, Winterville
- Specialty Stores, Winterville
- Sporting Goods Stores, Winterville
- Staffing & Support Services, Winterville
- State Government, Winterville
- Steel Manufacturers, Winterville
- Stone, Winterville
- Storage Trailers & Containers, Winterville
- Submarine Sandwich Restaurants, Winterville
- Surgical & Medical Instruments Manufacturers, Winterville
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