- Bakeries, Leadville
- Banks, Leadville
- Baptist Churches, Leadville
- Bars & Grills, Leadville
- Beach & Water Related Services, Leadville
- Beauty Salons, Leadville
- Beer & Ale - Wholesale, Leadville
- Beer & Wine Stores, Leadville
- Beverage Stores, Leadville
- Beverages, Leadville
- Bicycle Rentals, Leadville - Bike Rental
- Bicycle Repair & Service, Leadville - Bike Repair Shops
- Bicycle Shops, Leadville - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Boiler & Furnace Contractors, Leadville - Installation, Cleaning & Repair Services
- Book Stores, Leadville
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- Books, Magazines & Newspapers Stores, Leadville - Bookstores
- Boutiques & Boutique Items, Leadville
- Brake Service & Repair, Leadville - Brake Pads
- Builders & Contractors, Leadville
- Builders & Contractors - More, Leadville
- Building Cleaning - Exterior, Leadville - Cleaning Service
- Building Hardware & Materials, Leadville
- Building Materials & Supplies, Leadville
- Business & Professional Associations, Leadville
- Business Insurance, Leadville
- Business Legal Services, Leadville
- Business Planning & Consulting, Leadville
- Business Services, Leadville
- Business, Vocational & Technical, Leadville
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