- Fabricated Metal Products Manufacturers, Blacksburg
- Family Medicine & General Practice Doctors, Blacksburg - General Practitioner (GP), Physicians & Surgeons
- Family Services & Care, Blacksburg
- Federal Government, Blacksburg
- Fences & Animal Enclosure Contractors, Blacksburg
- Fencing - Fence Contractors, Blacksburg - Fence Installation & Repair - Wood, Metal, Vinyl & Wrought Iron Fences
- Finance, Blacksburg
- Financial Institutions, Blacksburg
- Financial Services, Blacksburg
- Finished Textiles Manufacturers, Blacksburg
- Fire Alarm Systems, Blacksburg
- Fire Department, Blacksburg
- Fireworks Retail, Blacksburg
- Fish & Seafood Restaurants, Blacksburg
- Florists, Blacksburg - Flower Shops
- Flowers & Plants, Blacksburg
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- Food & Beverage Stores & Services, Blacksburg
- Food & Beverages - Wholesale & Retail, Blacksburg
- Food Services, Blacksburg
- Forestry & Logging Equipment & Machinery, Blacksburg
- Forestry & Lumbering, Blacksburg
- Forestry Equipment & Supplies, Blacksburg
- Foundations, Clubs, Associations, Etcetera, Blacksburg
- Fruit & Vegetable Markets, Wholesale & Retail, Blacksburg
- Full Gospel Church, Blacksburg
- Full Service Breakfast Restaurants, Blacksburg
- Funeral Services, Crematory & Cemetery, Blacksburg - Funeral Homes & Directors
- Funeral Supplies, Blacksburg
- Furniture Repair, Blacksburg
- Furniture Repair & Refinishing, Blacksburg
- Furniture Reupholstery & Repair, Blacksburg
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