- Bakeries, Houlton
- Banks, Houlton
- Baptist Churches, Houlton
- Barber Shops, Houlton
- Barbers, Houlton
- Bars, Houlton
- Baseball Cards & Sports Memorabilia, Houlton
- Battery, Houlton - Retail Batteries Stores
- Battery Storage, Houlton
- Beauty Salons, Houlton
- Bedroom Furniture Stores, Houlton - Master & Kids Bedroom Furniture Sets & Beds
- Beer Taverns, Houlton
- Bereavement Services, Houlton
- Beverage Stores, Houlton
- Birth Control & Family Planning Clinics, Houlton
- Book Stores, Houlton
- Books, Magazines & Newspapers Stores, Houlton - Bookstores
- Brake Service & Repair, Houlton - Brake Pads
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- Breakfast Restaurants, Houlton
- Builders & Contractors, Houlton
- Builders & Contractors - More, Houlton
- Building Construction Consultants, Houlton - Construction Management & Consulting
- Building Design & Construction Consultants, Houlton
- Building Hardware & Materials, Houlton
- Building Materials, Houlton - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Houlton
- Burial Vaults, Houlton
- Business & Professional Associations, Houlton
- Business & Trade Organizations, Houlton
- Business Brokers, Houlton
- Business Insurance, Houlton
- Business Legal Services, Houlton
- Business Management Consultants, Houlton
- Business Services, Houlton
- Business, Vocational & Technical, Houlton
- Butchers & Meat Markets - Manufacturers, Houlton
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