- Paint & Painting Supplies, Wellsville
- Paint Stores, Wellsville
- Passenger Ground Transportation, Wellsville
- Passenger Vehicle Dealers, Wellsville
- Paving Contractors - Driveway, Road, Walkway, Wellsville - Installation, Repair & Seal - Asphalt & Concrete Pavers
- Personal Care, Wellsville
- Personal Credit Institutions & Services, Wellsville
- Personal Legal Services, Wellsville
- Personal Services, Wellsville
- Pet Food & Supplies, Wellsville
- Pet Shops & Supplies, Wellsville
- Pets Stores & Pet Supplies , Wellsville
- Pharmacy & Drug Stores, Wellsville - Drugstore - Chemists
- Physicians & Surgeon Services, Wellsville
- Pizza Restaurant 1 Of 2, Wellsville
- Places Of Religious Worship, Fellowship, & Study, Wellsville
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- Plumbers & Plumbing Contractors, Wellsville - Installation, Repair & Replace Services
- Plumbing Fixtures, Equipment, Parts & Supplies, Wellsville
- Podiatrists, Wellsville - Foot Doctors, Physicians & Surgeons (Podiatric Medicine)
- Presbyterian Churches, Wellsville
- Preschools, Wellsville
- Printing Services & Publishing Services, Wellsville
- Private Schools Secondary Schools, Wellsville
- Product Rental & Leasing, Wellsville
- Product Repair Services, Wellsville
- Professional, Wellsville
- Professional Services, Wellsville
- Professionals Equipment & Supplies, Wellsville
- Propane & Natural Gas, Wellsville
- Public Accountants, Wellsville
- Public Libraries, Wellsville
- Pumps Centrifugal, Wellsville
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