- Laboratories Dental, New Milford
- Laboratories Medical, New Milford
- Landscape Contractors & Designers, New Milford
- Landscaping, New Milford
- Laundry & Dry Cleaning Equipment & Supplies, New Milford - Cleaners & Dryers Sales, Repair, Service & Leasing
- Lawn & Garden Equipment & Supplies, New Milford
- Lawn & Garden Sprinkler Systems, New Milford
- Lawyers & Attorneys, New Milford
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- Legal Professionals, New Milford
- Limousine Service, New Milford
- Liquor Stores, New Milford
- Loans Personal, New Milford
- Locksmiths, New Milford - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, New Milford
- Long Haul Trucking Companies, New Milford
- Lutheran Church, New Milford
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