- Landscape Contractors & Designers, Boonville
- Landscaping, Boonville
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Boonville
- Lawn & Garden Equipment & Supplies, Boonville
- Lawn & Garden Services, Boonville
- Lawn Maintenance Services, Boonville
- Lawyers & Attorneys, Boonville
- Legal Professionals, Boonville
- Libraries, Boonville
- License Services, Boonville
- Limousine Service, Boonville
- Liquor Stores, Boonville
- Live Theaters, Boonville
- Livestock, Boonville
- Livestock Breeders, Boonville
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- Livestock Equipment & Supplies, Boonville
- Livestock Services, Boonville
- Loans Check Cashing, Boonville
- Loans Personal, Boonville
- Locks, Boonville
- Locksmiths, Boonville - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Boonville
- Lodging, Boonville
- Lodging Services, Boonville
- Long Haul Trucking Companies, Boonville
- Lp Gas Equipment & Supplies, Boonville
- Lumber & Lumber Products, Boonville
- Lumber & Lumber Products, Boonville
- Lutheran Church, Boonville
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