- Laboratories Medical, Port Lavaca
- Land Surveyor, Port Lavaca - Land Surveying Services
- Landscape Contractors & Designers, Port Lavaca
- Landscaping, Port Lavaca
- Late Night Restaurants, Port Lavaca
- Laundry Self Service, Port Lavaca
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Port Lavaca
- Lawn & Garden Services, Port Lavaca
- Lawn Maintenance Services, Port Lavaca
- Lawyers & Attorneys, Port Lavaca
- Legal & Tax Services, Port Lavaca
- Legal Professionals, Port Lavaca
- Libraries, Port Lavaca
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- Life Insurance, Port Lavaca
- Liquor Stores, Port Lavaca
- Live Theaters, Port Lavaca
- Livestock, Port Lavaca
- Loans Check Cashing, Port Lavaca
- Loans Personal, Port Lavaca
- Loans Title Services, Port Lavaca
- Lodging, Port Lavaca
- Lodging Services, Port Lavaca
- Long Haul Trucking Companies, Port Lavaca
- Lumber & Lumber Products, Port Lavaca
- Lumber & Lumber Products, Port Lavaca
- Lutheran Church, Port Lavaca
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