- Labor Organizations, Pittsford
- Laboratories Medical, Pittsford
- Land Companies, Pittsford
- Landscape Contractors & Designers, Pittsford
- Landscaping, Pittsford
- Lawn & Garden Equipment & Supplies, Pittsford
- Lawn & Garden Sprinkler Systems, Pittsford
- Lawyers & Attorneys, Pittsford
- Leather Goods Stores & Dealers, Pittsford
- Legal Professionals, Pittsford
- Libraries, Pittsford
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- Life Insurance, Pittsford
- Lingerie & Underwear for Women, Pittsford - Bras, Panties, Bustiers, Corsets & More
- Liquor Stores, Pittsford
- Lithograph Inks Manufacturers, Pittsford
- Loans Personal, Pittsford
- Locksmiths, Pittsford - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, Pittsford
- Lumber & Lumber Products, Pittsford
- Lumber & Lumber Products, Pittsford
- Lutheran Church, Pittsford
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