- Paint Stores, Trenton
- Paper & Cardboard Manufacturers, Trenton
- Paper Finishers Manufacturers, Trenton
- Passenger Ground Transportation, Trenton
- Passenger Vehicle Dealers, Trenton
- Pasta Restaurants, Trenton
- Pawn Shops, Trenton
- Personal Care, Trenton
- Personal Credit Institutions & Services, Trenton
- Personal Legal Services, Trenton
- Personal Services, Trenton
- Personnel Consultants & Services, Trenton
- Pest Control Products, Trenton
- Pest Control Services, Trenton - Termite Control, Insects & Bed Bug Treatment - Pest Control Companies
- Pest Control Supplies & Equipment, Trenton
- Pharmacy & Drug Stores, Trenton - Drugstore - Chemists
- Phone Companies - Long Distance Service, Trenton
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- Pizza Restaurant 1 Of 2, Trenton
- Playgrounds Parks & Trails, Trenton
- Plumbers & Plumbing Contractors, Trenton - Installation, Repair & Replace Services
- Plumbing Fixtures, Equipment, Parts & Supplies, Trenton
- Post Construction Cleaning , Trenton - Clean-Up Services Contractors
- Powder Coatings, Trenton
- Presbyterian Churches, Trenton
- Preschools, Trenton
- Product Rental & Leasing, Trenton
- Product Repair Services, Trenton
- Professional, Trenton
- Professional Services, Trenton
- Professionals Equipment & Supplies, Trenton
- Propane & Natural Gas, Trenton
- Public Accountants, Trenton
- Public Health Program Administration, Trenton
- Public Libraries, Trenton
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