- Sand Gravel & Aggregate, Monroeville
- Sandwich Shop Restaurants, Monroeville
- Sawmill & Planing Mills, Monroeville
- Sawmill Supplies & Equipment Repair, Monroeville
- Scrap & Waste Materials, Monroeville
- Seafood Restaurants, Monroeville
- Secondary Schools, Monroeville
- Security Brokers & Dealers, Monroeville
- Senior Citizens Information & Services, Monroeville
- Senior Citizens Service & Health Organizations, Monroeville
- Shirts & T-Shirts, Monroeville
- Shoe Store - More, Monroeville
- Shoe Stores, Monroeville - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Monroeville
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- Signs, Monroeville
- Skating Rink & Hockey Operation Services, Monroeville
- Skin Care & Cosmetology Salons, Monroeville
- Skin Care Products & Treatments, Monroeville
- Snacks & Desserts, Monroeville
- Social Security And Disability Attorneys & Lawyers, Monroeville
- Social Services & Welfare, Monroeville
- Specialty Stores, Monroeville
- Sporting Goods Stores, Monroeville
- Sportswear Clothing Stores, Monroeville - Sports Clothes
- Staffing & Support Services, Monroeville
- State Government, Monroeville
- Stocks & Bond Brokers, Monroeville
- Storm Doors & Windows, Monroeville
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