- Landscape Contractors & Designers, Covington
- Landscaping, Covington
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Covington
- Lawn & Garden Equipment & Supplies, Covington
- Lawn & Garden Services, Covington
- Lawn Maintenance Services, Covington
- Lawn Mowers & Power Equipment, Covington
- Lawyers & Attorneys, Covington
- Legal Professionals, Covington
- Libraries, Covington
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- Licensed Counselors, Covington
- Liquor Stores, Covington
- Livestock, Covington
- Locks, Covington
- Locksmiths, Covington - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Covington
- Long Haul Trucking Companies, Covington
- Lumber & Wood Products Manufacturers, Covington
- Lumber Companies, Covington - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Covington
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