- Bakeries, Swarthmore
- Balancing Service, Swarthmore - Wheel & Tire Balancing
- Balancing Service Industrial, Swarthmore
- Banks, Swarthmore
- Barbers, Swarthmore
- Bars, Swarthmore
- Beauty Salons, Swarthmore
- Bed & Breakfast, Swarthmore
- Beer Taverns, Swarthmore
- Beverage Stores, Swarthmore
- Bicycle Rentals, Swarthmore - Bike Rental
- Bicycle Repair & Service, Swarthmore - Bike Repair Shops
- Bicycle Shops, Swarthmore - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
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- Book Stores, Swarthmore
- Breakfast Restaurants, Swarthmore
- Builders & Contractors, Swarthmore
- Builders & Contractors - More, Swarthmore
- Building Construction Consultants, Swarthmore - Construction Management & Consulting
- Building Materials, Swarthmore - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Swarthmore
- Business & Professional Associations, Swarthmore
- Business Insurance, Swarthmore
- Business Legal Services, Swarthmore
- Business Management Consultants, Swarthmore
- Business Services, Swarthmore
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