- Paint & Painting Supplies, Ortonville
- Paint Stores, Ortonville
- Paper & Cardboard Manufacturers, Ortonville
- Paper Finishers Manufacturers, Ortonville
- Party & Event Planning, Decorations, Equipment & Supplies, Ortonville - Party Supply Stores
- Party Supplies Rentals, Ortonville
- Passenger Vehicle Dealers, Ortonville
- Passenger Water Transportation, Ortonville
- Patio, Garden, Lawn & Outdoor Furniture, Ortonville
- Personal Care, Ortonville
- Personal Legal Services, Ortonville
- Personal Services, Ortonville
- Personal Watercraft Dealers, Ortonville
- Pest Control Services, Ortonville - Termite Control, Insects & Bed Bug Treatment - Pest Control Companies
- Pet Care Services, Ortonville
- Pet Grooming & Boarding, Ortonville
- Pet Grooming & Boarding Services, Ortonville
- Pet Shops & Supplies, Ortonville
- Pets Stores & Pet Supplies , Ortonville
- Pharmacy & Drug Stores, Ortonville - Drugstore - Chemists
- Photo & Picture Frames, Ortonville - Picture Framing
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- Physical Therapists, Ortonville - Physical Therapy
- Pipe Bending & Fabricating, Ortonville
- Pipeline Contractors, Ortonville - Oil, Water & Gas Pipeline Companies - Installation & Repair
- Pizza Restaurant 1 Of 2, Ortonville
- Places Of Religious Worship, Fellowship, & Study, Ortonville
- Plants, Trees, Flowers & Seeds, Ortonville
- Plumbers & Plumbing Contractors, Ortonville - Installation, Repair & Replace Services
- Plumbing & Drainage - Supplies & Materials, Ortonville
- Plumbing - Sewer & Drain Cleaning & Repair, Ortonville
- Plumbing Fixtures, Equipment, Parts & Supplies, Ortonville
- Podiatrists, Ortonville - Foot Doctors, Physicians & Surgeons (Podiatric Medicine)
- Preschools, Ortonville
- Product Rental & Leasing, Ortonville
- Product Repair Services, Ortonville
- Professional, Ortonville
- Propane & Natural Gas, Ortonville
- Public Accountants, Ortonville
- Public Libraries, Ortonville
- Pubs, Ortonville
- Pump Contractors, Ortonville - Repair & Service
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