- Labor & Employment Consultants, West Hempstead
- Laboratories Dental, West Hempstead
- Laboratories Medical, West Hempstead
- Landscape Contractors & Designers, West Hempstead
- Landscape Lighting, West Hempstead
- Landscaping, West Hempstead
- Late Night Restaurants, West Hempstead
- Latin American Restaurants, West Hempstead
- Laundry Self Service, West Hempstead
- Lawn & Garden Equipment & Supplies, West Hempstead
- Lawn & Garden Services, West Hempstead
- Lawn & Garden Sprinkler Systems, West Hempstead
- Lawn Maintenance Services, West Hempstead
- Lawn Mower Repair & Blade Sharpening Service, West Hempstead
- Lawyers & Attorneys, West Hempstead
- Legal Clinics, West Hempstead
- Legal Professionals, West Hempstead
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- Libraries, West Hempstead
- License Services, West Hempstead
- Lighting Consultants & Designers, West Hempstead
- Lighting Fixtures & Equipment, West Hempstead
- Limousine Service, West Hempstead
- Liquor & Beer Manufacturers, West Hempstead
- Liquor Stores, West Hempstead
- Loans Personal, West Hempstead
- Locks, West Hempstead
- Locksmiths, West Hempstead - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, West Hempstead
- Lodging, West Hempstead
- Lodging Services, West Hempstead
- Long Haul Trucking Companies, West Hempstead
- Lumber & Lumber Products, West Hempstead
- Lumber & Lumber Products, West Hempstead
- Lutheran Church, West Hempstead
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