- Salvage Yards, Junk Yards & Wrecker Service, Belleville
- Sandwich Shop Restaurants, Belleville
- Secondary Schools, Belleville
- Security Brokers & Dealers, Belleville
- Senior Citizens Service & Health Organizations, Belleville
- Shopping & Shopping Services, Belleville
- Signs, Belleville
- Snowmobile Dealers, Belleville - Parts, Gear, Clothing & Accessories
- Social Services & Welfare, Belleville
- Special Dies Tools Jigs & Fixtures Manufacturers, Belleville
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- Specialty Animal Services, Belleville
- Specialty Stores, Belleville
- Speech & Hearing Specialists, Belleville
- Speech Pathologists, Belleville - Speech & Language Therapy
- Stitching Services, Belleville
- Stock & Bond Brokers & Dealers, Belleville
- Stocks & Bond Brokers, Belleville
- Store Fixtures, Belleville
- Surplus & Salvage Merchandise, Belleville
- Surveyor Services, Belleville - Surveying Service
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