- Faith Church, Farmingville
- Family Services & Care, Farmingville
- Fashion Designers, Farmingville
- Fast Food Restaurants, Farmingville
- Federal Administrative Agencies, Farmingville
- Federal Department Of Transportation, Farmingville
- Federal Government, Farmingville
- Fencing, Farmingville
- Fencing & Gate Materials, Farmingville
- Fencing - Fence Supplies & Materials, Farmingville - Fence Companies
- Finance, Farmingville
- Financial Institutions, Farmingville
- Financial Planning Consultants, Farmingville
- Financial Services, Farmingville
- Fire & Water Damage Restoration, Farmingville - Cleanup & Repair Service
- Fire Department, Farmingville
- Fire, Marine & Casualty Insurance, Farmingville
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- Fish & Seafood Markets, Wholesale & Retail, Farmingville
- Fitness, Farmingville
- Fitness Centers, Farmingville
- Flea Markets, Farmingville
- Florists, Farmingville - Flower Shops
- Flowers & Plants, Farmingville
- Food & Beverage Stores & Services, Farmingville
- Food & Beverages - Wholesale & Retail, Farmingville
- Food Brokers, Farmingville
- Food Brokers & Manufacturing Agents, Farmingville
- Food Services, Farmingville
- Foundations, Clubs, Associations, Etcetera, Farmingville
- Fuel, Farmingville
- Fuel Dealers & Gas Stations, Farmingville
- Full Service Breakfast Restaurants, Farmingville
- Furniture Stores, Farmingville
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