- Bakeries, Oroville
- Banks, Oroville
- Bars, Oroville
- Bars & Grills, Oroville
- Beauty Salons, Oroville
- Beer & Wine Stores, Oroville
- Beer Taverns, Oroville
- Beverage Stores, Oroville
- Boat Services, Oroville
- Book Stores, Oroville
- Books, Magazines & Newspapers Stores, Oroville - Bookstores
- Boutiques & Boutique Items, Oroville
- Brake Service & Repair, Oroville - Brake Pads
- Brick Masonry & Bricklayer Contractors, Oroville - Brick Mason - Install & Repair
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- Buddhist Churches, Oroville
- Builders & Contractors, Oroville
- Builders & Contractors - More, Oroville
- Builders Hardware Stores, Oroville
- Building Hardware & Materials, Oroville
- Building Materials, Oroville - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Oroville
- Burglar Alarm Systems, Oroville
- Business Brokers, Oroville
- Business Insurance, Oroville
- Business Legal Services, Oroville
- Business Services, Oroville
- Business, Vocational & Technical, Oroville
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