- Banks, Millersville
- Baptist Churches, Millersville
- Barbers, Millersville
- Bars, Millersville
- Bars & Grills, Millersville
- Beach & Water Related Services, Millersville
- Beauty Salons, Millersville
- Bed & Breakfast, Millersville
- Beer & Ale - Wholesale, Millersville
- Beer & Wine Stores, Millersville
- Beer Taverns, Millersville
- Beverage Stores, Millersville
- Beverages, Millersville
- Bible Church, Millersville
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- Boating & Swimming Clubs, Millersville
- Bonds, Millersville
- Brake Service & Repair, Millersville - Brake Pads
- Bridge, Tunnel & Elevated Highway Construction, Millersville - Highway, Street And Bridge Contractors
- Builders & Contractors, Millersville
- Builders & Contractors - More, Millersville
- Building Construction Consultants, Millersville - Construction Management & Consulting
- Building Materials & Supplies, Millersville
- Building Restoration & Preservation, Millersville
- Business & Professional Associations, Millersville
- Business Insurance, Millersville
- Business Legal Services, Millersville
- Business Services, Millersville
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