- Bagels, West Haven
- Bags, West Haven - Paper, Plastic, Sand, Burlap, Canvas, Transparent, etc
- Bakeries, West Haven
- Banks, West Haven
- Banquet Halls, Reception Halls & Party Facilities, West Haven
- Baptist Churches, West Haven
- Barbecue Restaurants, West Haven
- Barber Shops, West Haven
- Barbers, West Haven
- Bars, West Haven
- Bars & Grills, West Haven
- Baseball Little Leagues, West Haven
- Bathroom Accessories & Fixtures, West Haven - Bath Accessories, Vanity & Mirrors
- Bathroom Fixtures, West Haven - Bathroom Faucets, Bathtubs, Sinks, Shower Heads & Fixtures, etc
- Bathroom Remodeling, West Haven - Bathroom Remodel & Planning Services
- Bathtubs & Sinks - Repair & Refinishing, West Haven - Bathtub Refinishing, Repair & Resurfacing
- Battery, West Haven - Retail Batteries Stores
- Battery Storage, West Haven
- Beauty Salons, West Haven
- Bedroom Furniture Stores, West Haven - Master & Kids Bedroom Furniture Sets & Beds
- Beer & Ale - Wholesale, West Haven
- Beer Taverns, West Haven
- Beverage Coolers, West Haven
- Beverage Machinery, West Haven
- Beverage Stores, West Haven
- Beverages, West Haven
- Bicycle Shops, West Haven - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Boat Lettering & Signs, West Haven - Boat Painting
- Boats & Yachts, West Haven - Yachts, Sailboats & Boats for Sale
- Book Stores, West Haven
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- Books, Magazines & Newspapers Stores, West Haven - Bookstores
- Bottles & Jars, West Haven
- Boutiques & Boutique Items, West Haven
- Bowling Centers, West Haven
- Brake Service & Repair, West Haven - Brake Pads
- Brazilian Restaurants, West Haven
- Breakfast Restaurants, West Haven
- Builders & Contractors, West Haven
- Builders & Contractors - More, West Haven
- Building & Home Inspection, West Haven - Real Estate, Building, Land & House Inspection Service
- Building & Property Maintenance & Services, West Haven
- Building Construction Consultants, West Haven - Construction Management & Consulting
- Building Hardware & Materials, West Haven
- Building Materials, West Haven - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, West Haven
- Building Site Preparation Contractors, West Haven - Land Preparation & Land Clearing
- Buildings, West Haven
- Burglar Alarm Systems, West Haven
- Bus & Van Rental & Leasing, West Haven
- Bus Dealers, West Haven
- Bus Rental & Charter Bus Service, West Haven
- Business & Professional Associations, West Haven
- Business & Trade Organizations, West Haven
- Business Communication Consultants, West Haven
- Business Insurance, West Haven
- Business Legal Services, West Haven
- Business Services, West Haven
- Business Wholesale, West Haven
- Business, Vocational & Technical, West Haven
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