- Paint & Painting Supplies, Hallettsville
- Paint Stores, Hallettsville
- Paper & Cardboard Manufacturers, Hallettsville
- Paper Finishers Manufacturers, Hallettsville
- Passenger Vehicle Dealers, Hallettsville
- Personal Care, Hallettsville
- Personal Credit Institutions & Services, Hallettsville
- Personal Legal Services, Hallettsville
- Personal Services, Hallettsville
- Pest Control Services, Hallettsville - Termite Control, Insects & Bed Bug Treatment - Pest Control Companies
- Pharmacy & Drug Stores, Hallettsville - Drugstore - Chemists
- Pipeline Contractors, Hallettsville - Oil, Water & Gas Pipeline Companies - Installation & Repair
- Pizza Restaurant 1 Of 2, Hallettsville
- Plant Products & By Products, Hallettsville
- Plants, Trees, Flowers & Seeds, Hallettsville
- Plumbers & Plumbing Contractors, Hallettsville - Installation, Repair & Replace Services
- Plumbing - Sewer & Drain Cleaning & Repair, Hallettsville
- Portable Buildings, Hallettsville
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- Prefab Homes, Buildings & Structures, Hallettsville - Prefabricated Homes - Building Systems & Components
- Prefab Storage Sheds & Buildings, Hallettsville
- Prefabricated Buildings, Hallettsville
- Preservation & Restoration Services, Hallettsville
- Printing Services & Publishing Services, Hallettsville
- Private Schools Secondary Schools, Hallettsville
- Product Rental & Leasing, Hallettsville
- Product Repair Services, Hallettsville
- Professional, Hallettsville
- Professional Services, Hallettsville
- Promotional Products, Hallettsville - Promotional Items, Corporate Gifts, Personalized Gifts, etc
- Promotional Services, Hallettsville
- Public Accountants, Hallettsville
- Public Libraries, Hallettsville
- Public Safety Communications Systems, Hallettsville
- Publishing Consultants & Services, Hallettsville
- Pumps, Hallettsville
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