- Sand Gravel & Aggregate, West Seneca
- Sandwich Shop Restaurants, West Seneca
- Savings & Loan Associations, West Seneca
- Savings Banks, West Seneca
- Search & Navigation Equipment Manufacturers, West Seneca
- Security Brokers & Dealers, West Seneca
- Security Investigative Services, West Seneca
- Security Services, West Seneca
- Sheet Metal Contractors, West Seneca - Sheet Metal Fabrication
- Sheet Metal Fabricators & Ductwork Contractors, West Seneca
- Shirts & T-Shirts, West Seneca
- Shoe Repair Shops, West Seneca
- Shoe Stores, West Seneca - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, West Seneca
|
- Siding Contractors, West Seneca - Vinyl Siding, Wood, Metal & Aluminum Siding Contractors - Installation & Repair
- Signs, West Seneca
- Skating Rink & Hockey Operation Services, West Seneca
- Snacks & Desserts, West Seneca
- Social Services & Welfare, West Seneca
- Special Events & Party Supply Rental, West Seneca
- Specialty Animal Services, West Seneca
- Specialty Stores, West Seneca
- Sporting Goods Stores, West Seneca
- Staffing & Support Services, West Seneca
- Stamp Collecting & Coin Dealers , West Seneca
- Stereo, Audio & Video Equipment Dealers & Stores, West Seneca
- Surgical Hospitals, West Seneca - Surgical Centers
|
