- Paper & Cardboard Manufacturers, Ortonville
- Paper Finishers Manufacturers, Ortonville
- Passenger Vehicle Dealers, Ortonville
- Personal Care, Ortonville
- Personal Credit Institutions & Services, Ortonville
- Personal Legal Services, Ortonville
- Personal Services, Ortonville
- Personal Watercraft Dealers, Ortonville
- Pharmacy & Drug Stores, Ortonville - Drugstore - Chemists
- Photo & Picture Frames, Ortonville - Picture Framing
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- Physical Therapists, Ortonville - Physical Therapy
- Pizza Restaurant 1 Of 2, Ortonville
- Plumbers & Plumbing Contractors, Ortonville - Installation, Repair & Replace Services
- Printers Services, Ortonville
- Product Repair Services, Ortonville
- Professional, Ortonville
- Propane & Natural Gas, Ortonville
- Public Accountants, Ortonville
- Publishing & Printing Manufacturers, Ortonville
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