- Laboratories Medical, Schwenksville
- Lakes & Ponds Construction Maintenance Restoration & Control, Schwenksville
- Landscape Contractors & Designers, Schwenksville
- Landscape Lighting, Schwenksville
- Landscaping, Schwenksville
- Landscaping Materials & Supplies, Schwenksville
- Laundry & Dry Cleaning Equipment & Supplies, Schwenksville - Cleaners & Dryers Sales, Repair, Service & Leasing
- Lawn & Garden Equipment & Supplies, Schwenksville
- Lawn & Garden Services, Schwenksville
- Lawn & Garden Sprinkler Systems, Schwenksville
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- Lawn Maintenance Services, Schwenksville
- Lawyers & Attorneys, Schwenksville
- Legal Professionals, Schwenksville
- Libraries, Schwenksville
- Limousine Dealers, Schwenksville
- Limousine Service, Schwenksville
- Liquor Stores, Schwenksville
- Loans Personal, Schwenksville
- Lodging, Schwenksville
- Lutheran Church, Schwenksville
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