- Bakeries, Souderton
- Baling Equipment & Supplies, Souderton
- Banks, Souderton
- Banquet Halls, Souderton
- Baptist Churches, Souderton
- Barbecue Restaurants, Souderton
- Barber Shops, Souderton
- Barbers, Souderton
- Bars, Souderton
- Bars & Grills, Souderton
- Baseball Cards & Sports Memorabilia, Souderton
- Bearings, Souderton
- Beauty Salons, Souderton
- Beer & Ale - Wholesale, Souderton
- Beer & Wine Stores, Souderton
- Beer Taverns, Souderton
- Beverage Alcoholic, Souderton
- Beverage Stores, Souderton
- Beverages, Souderton
- Bible Church, Souderton
- Bibles Retail, Souderton
- Bicycle Rentals, Souderton - Bike Rental
- Bicycle Repair & Service, Souderton - Bike Repair Shops
- Bicycle Shops, Souderton - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Biological Products & Supplies, Souderton
- Biological Research, Souderton - Biological Labs
- Boat Services, Souderton
- Boat Storage , Souderton - Equipment & Services
- Boiler Rental, Souderton
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- Boiler Repair & Cleaning, Souderton
- Bonds, Souderton
- Books, Magazines & Newspapers Stores, Souderton - Bookstores
- Bottling Manufacturing, Souderton
- Brake Service & Repair, Souderton - Brake Pads
- Breakfast Restaurants, Souderton
- Brethren Church, Souderton
- Brick Clay Common Face, Souderton
- Brick Masonry & Bricklayer Contractors, Souderton - Brick Mason - Install & Repair
- Bricks, Blocks & Stone Products, Souderton - Companies, Wholesale, Manufacturers & Suppliers
- Brooms & Brushes Manufacturers, Souderton
- Builders & Contractors, Souderton
- Builders & Contractors - More, Souderton
- Building & Property Maintenance & Services, Souderton
- Building Construction Consultants, Souderton - Construction Management & Consulting
- Building Design & Construction Consultants, Souderton
- Building Materials, Souderton - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Souderton
- Burglar & Alarm Service, Souderton - Monitoring Service
- Burglar Alarm Systems, Souderton
- Bus Rental & Charter Bus Service, Souderton
- Business & Professional Associations, Souderton
- Business & Trade Organizations, Souderton
- Business Legal Services, Souderton
- Business Management Consultants, Souderton
- Business Planning & Consulting, Souderton
- Business Services, Souderton
- Business Wholesale, Souderton
- Butchers & Meat Markets - Manufacturers, Souderton
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