- Baby Stores, Plantsville - Baby Accessories & Clothes
- Bakeries, Plantsville
- Banks, Plantsville
- Banquet Halls, Reception Halls & Party Facilities, Plantsville
- Barber Shops, Plantsville
- Barbers, Plantsville
- Bars, Plantsville
- Bars & Grills, Plantsville
- Baseball Little Leagues, Plantsville
- Beads Decor, Plantsville
- Beauty Salons, Plantsville
- Beer Taverns, Plantsville
- Beverage Stores, Plantsville
- Bicycle Shops, Plantsville - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Biological Research, Plantsville - Biological Labs
- Biotechnology Products & Services, Plantsville
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- Bottled Gas, Lp Gas & Propane Dealers, Plantsville
- Bowling Apparel & Accessories, Plantsville
- Brake Service & Repair, Plantsville - Brake Pads
- Breakfast Restaurants, Plantsville
- Brick Masonry & Bricklayer Contractors, Plantsville - Brick Mason - Install & Repair
- Builders & Contractors, Plantsville
- Builders & Contractors - More, Plantsville
- Building Construction Consultants, Plantsville - Construction Management & Consulting
- Building Hardware & Materials, Plantsville
- Building Materials, Plantsville - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Plantsville
- Bus Rental & Charter Bus Service, Plantsville
- Business & Professional Associations, Plantsville
- Business Legal Services, Plantsville
- Business Management Consultants, Plantsville
- Business Services, Plantsville
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