- Sails, Port Townsend
- Salvage Yards, Junk Yards & Wrecker Service, Port Townsend
- Sand Gravel & Aggregate, Port Townsend
- Sandwich Shop Restaurants, Port Townsend
- Satellite Descrambling & Programming Service, Port Townsend
- Satellite Dish Antennas & Equipment Dealers, Port Townsend
- Satellite TV Service, Port Townsend
- Savings Banks, Port Townsend
- Sawmill Equipment & Supplies, Port Townsend
- Sawmill, Paper & Woodworking Supplies, Machinery & Equipment, Port Townsend
- Scientific & Laboratory Equipment & Instruments, Port Townsend
- Scrap & Waste Materials, Port Townsend
- Seafood Restaurants, Port Townsend
- Secondary Schools, Port Townsend
- Security & Surveillance System & Equipment, Port Townsend
- Security Alarm Systems - Home & Business, Port Townsend
- Security Brokers & Dealers, Port Townsend
- Security Control Systems & Monitoring, Port Townsend - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Guard & Patrol Service, Port Townsend - Bodyguard, Guard Dogs, Etc
- Security Investigative Services, Port Townsend
- Security Services, Port Townsend
- Senior Citizens Service & Health Organizations, Port Townsend
- Septic Tank Installation & Repair, Port Townsend - Septic Systems
- Septic Tank Pumping & Cleaning, Port Townsend - Septic Systems
- Septic Tanks & Septic Systems Contractors, Port Townsend - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Port Townsend - Wholesale, Dealers & Suppliers
- Septic Tanks & Systems Contractors & Designers, Port Townsend
- Sewer & Drain Cleaning & Repair, Port Townsend - Drain Cleaner & Installation Services
- Sewing & Yarn Stores & Supplies, Port Townsend
- Sewing Ribbons, Port Townsend
- Sheet Metal Contractors, Port Townsend - Sheet Metal Fabrication
- Sheet Metal Fabricators & Ductwork Contractors, Port Townsend
- Ship & Boat Building & Repairing, Port Townsend
- Shirts & T-Shirts, Port Townsend
- Shoe Dyers, Port Townsend
- Shoe Repair & Shoeshine Parlors, Port Townsend
- Shoe Repair Shops, Port Townsend
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- Shoe Stores, Port Townsend - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Port Townsend
- Shutters - Interior & Exterior, Port Townsend - Wood, Vinyl, Window, Plantation Shutters, etc
- Signs, Port Townsend
- Skin Care & Cosmetology Salons, Port Townsend
- Skin Care Products & Treatments, Port Townsend
- Snack Foods, Port Townsend
- Snacks & Desserts, Port Townsend
- Social Clubs & Organizations, Port Townsend
- Social Services & Welfare, Port Townsend
- Social Workers & Services, Port Townsend
- Societies & Foundation Associations, Port Townsend
- Sod & Sodding Service, Port Townsend
- Soda Fountain Shops, Port Townsend
- Solar Equipment, Port Townsend
- Solar Products & Services, Port Townsend
- Special Education & Care, Port Townsend
- Special Events & Party Supply Rental, Port Townsend
- Special Interest Associations, Port Townsend
- Special Interest Schools Or Instruction, Port Townsend
- Specialty Animal Services, Port Townsend
- Specialty Stores, Port Townsend
- Speech & Hearing Specialists, Port Townsend
- Sporting Goods Manufacturers, Port Townsend
- Sporting Goods Stores, Port Townsend
- State Government, Port Townsend
- State Parks, Port Townsend
- Steak House Restaurants, Port Townsend
- Steel Manufacturers, Port Townsend
- Stereo, Audio & Video Equipment Dealers & Stores, Port Townsend
- Stocks & Bond Brokers, Port Townsend
- Stoves & Furnace Equipment, Port Townsend - Fittings & Repair Parts
- Substance Abuse Clinics, Port Townsend - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Support Services, Port Townsend
- Surveyor Services, Port Townsend - Surveying Service
- Sushi Restaurants, Port Townsend
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