- Labels & Tags, Fallston
- Laboratories Medical, Fallston
- Landscape Contractors & Designers, Fallston
- Landscaping, Fallston
- Landscaping Materials & Supplies, Fallston
- Law Enforcement Equipment & Supplies, Fallston
- Lawn & Garden Equipment & Supplies, Fallston
- Lawn & Garden Services, Fallston
- Lawn Maintenance Services, Fallston
- Lawn Mowers & Power Equipment, Fallston
- Lawyers & Attorneys, Fallston
- Legal Professionals, Fallston
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- Libraries, Fallston
- Lie Detectors, Fallston
- Limousine Service, Fallston
- Liquor Stores, Fallston
- Livestock, Fallston
- Livestock Dealers, Fallston
- Locksmiths, Fallston - Residence, Commercial, Safe & Auto Car Locksmith
- Long Haul Trucking Companies, Fallston
- Lumber & Lumber Products, Fallston
- Lumber & Lumber Products, Fallston
- Lutheran Church, Fallston
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