- Sand Gravel & Aggregate, Valdez
- Sandwich Shop Restaurants, Valdez
- Savings Banks, Valdez
- School Bus Transportation Service, Valdez
- Secondary Schools, Valdez
- Septic Tank Pumping & Cleaning, Valdez - Septic Systems
- Shopping & Shopping Services, Valdez
- Sightseeing Tours, Valdez
- Small Appliances, Valdez
- Snow Removal Services, Valdez - Snow Plow Service
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- Social Clubs & Organizations, Valdez
- Social Services & Welfare, Valdez
- Societies & Foundation Associations, Valdez
- Specialty Stores, Valdez
- Sporting Goods Equipment Rental, Valdez
- Sporting Goods Stores, Valdez
- Staffing & Support Services, Valdez
- Steamship Companies & Agencies, Valdez
- Stoves & Furnace Equipment, Valdez - Fittings & Repair Parts
- Submarine Sandwich Restaurants, Valdez
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