- Paint & Painting Supplies, Northville
- Paint Stores, Northville
- Paper & Cardboard Manufacturers, Northville
- Paper Finishers Manufacturers, Northville
- Personal Care, Northville
- Personal Credit Institutions & Services, Northville
- Personal Legal Services, Northville
- Personal Services, Northville
- Personal Watercraft Dealers, Northville
- Pest Control Services, Northville - Termite Control, Insects & Bed Bug Treatment - Pest Control Companies
- Pet Food & Supplies, Northville
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- Pet Shops & Supplies, Northville
- Pets Stores & Pet Supplies , Northville
- Physical Therapists, Northville - Physical Therapy
- Pizza Restaurant 1 Of 2, Northville
- Plumbers & Plumbing Contractors, Northville - Installation, Repair & Replace Services
- Presbyterian Churches, Northville
- Product Rental & Leasing, Northville
- Professional, Northville
- Professional Services, Northville
- Professionals Equipment & Supplies, Northville
- Public Libraries, Northville
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