- Bail Bonds, Gridley
- Baked Goods, Snacks & Sweets, Gridley
- Bakeries, Gridley
- Banking Attorneys & Lawyers, Gridley
- Banking Attorneys & Lawyers, Gridley
- Banking Lawyers & Attorneys, Gridley
- Banks, Gridley
- Banquet Halls, Gridley
- Banquet Halls, Reception Halls & Party Facilities, Gridley
- Baptist Churches, Gridley
- Barber Shops, Gridley
- Barbers, Gridley
- Bars & Grills, Gridley
- Battery, Gridley - Retail Batteries Stores
- Battery Storage, Gridley
- Beauty Salons, Gridley
- Bereavement Services, Gridley
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- Beverage Stores, Gridley
- Bicycle Shops, Gridley - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Bistros, Gridley
- Bonds, Gridley
- Brake Service & Repair, Gridley - Brake Pads
- Breakfast Restaurants, Gridley
- Builders & Contractors, Gridley
- Builders & Contractors - More, Gridley
- Builders Hardware Stores, Gridley
- Building & Property Maintenance & Services, Gridley
- Building Construction Consultants, Gridley - Construction Management & Consulting
- Building Hardware & Materials, Gridley
- Building Materials & Supplies, Gridley
- Bulk Mail Order Processing, Gridley
- Business & Professional Associations, Gridley
- Business Legal Services, Gridley
- Business Services, Gridley
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