- Sand Gravel & Aggregate, New Hamburg
- Sandwich Shop Restaurants, New Hamburg
- Screen Printing, New Hamburg
- Secondary Schools, New Hamburg
- Septic Tank Pumping & Cleaning, New Hamburg - Septic Systems
- Sewing & Yarn Stores & Supplies, New Hamburg
- Sewing Spindles, New Hamburg
- Shopping & Shopping Services, New Hamburg
- Signs, New Hamburg
- Snowmobile Dealers, New Hamburg - Parts, Gear, Clothing & Accessories
- Snowmobile Equipment & Supplies, New Hamburg
- Social Services & Welfare, New Hamburg
- Special Coatings, New Hamburg - Protective Coatings
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- Special Events Photographers, New Hamburg
- Special Interest Schools Or Instruction, New Hamburg
- Speciality Food Stores, New Hamburg
- Specialty Animal Services, New Hamburg
- Specialty Stores, New Hamburg
- Sporting & Recreational Camps, New Hamburg
- Sporting Goods Stores, New Hamburg
- Sports Medicine, New Hamburg - Doctors, Physicians & Surgeons
- Staffing & Support Services, New Hamburg
- Steel & Metal Goods, New Hamburg - Steel Distributors
- Steel Manufacturers, New Hamburg
- Submarine Sandwich Restaurants, New Hamburg
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