- Land Surveyor, Port Townsend - Land Surveying Services
- Landscape Contractors & Designers, Port Townsend
- Landscaping, Port Townsend
- Landscaping Materials & Supplies, Port Townsend
- Laundry Self Service, Port Townsend
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Port Townsend
- Lawn & Garden Equipment & Supplies, Port Townsend
- Lawn & Garden Services, Port Townsend
- Lawn & Garden Sprinkler Systems, Port Townsend
- Lawn Hydroseeding, Port Townsend
- Lawn Maintenance Services, Port Townsend
- Lawn Mower Repair & Blade Sharpening Service, Port Townsend
- Lawyers & Attorneys, Port Townsend
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- Leather Goods Cleaners & Dyers, Port Townsend
- Legal & Tax Services, Port Townsend
- Legal Professionals, Port Townsend
- Libraries, Port Townsend
- Life Insurance, Port Townsend
- Liquor Stores, Port Townsend
- Live Theaters, Port Townsend
- Loans Personal, Port Townsend
- Lodging, Port Townsend
- Long Haul Trucking Companies, Port Townsend
- Lumber & Lumber Products, Port Townsend
- Lumber & Lumber Products, Port Townsend
- Lutheran Church, Port Townsend
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