- Laboratories Medical, Columbia Station
- Landscape Contractors & Designers, Columbia Station
- Landscape Garden Services, Columbia Station
- Landscape Lighting, Columbia Station
- Landscaping, Columbia Station
- Landscaping Materials & Supplies, Columbia Station
- Lawn & Garden Equipment & Supplies, Columbia Station
- Lawn & Garden Services, Columbia Station
- Lawn & Garden Sprinkler Systems, Columbia Station
- Lawn Maintenance Services, Columbia Station
- Lead Inspection, Testing & Consulting, Columbia Station - Lead Paint
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- Libraries, Columbia Station
- Library Furniture, Columbia Station
- Lime & Limestone, Columbia Station
- Locks, Columbia Station
- Locksmiths, Columbia Station - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Columbia Station
- Long Haul Trucking Companies, Columbia Station
- Lumber & Lumber Products, Columbia Station
- Lumber & Lumber Products, Columbia Station
- Lutheran Church, Columbia Station
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