- Family Medicine & General Practice Doctors, Ortonville - General Practitioner (GP), Physicians & Surgeons
- Family Services & Care, Ortonville
- Farm Equipment, Ortonville
- Farms, Ortonville
- Federal Government, Ortonville
- Finance, Ortonville
- Financial Advisory Services, Ortonville
- Financial Institutions, Ortonville
- Financial Management & Consulting, Ortonville
- Financial Planning Consultants, Ortonville
- Financial Services, Ortonville
- Fire Department, Ortonville
- Fire, Marine & Casualty Insurance, Ortonville
- Firewood, Ortonville
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- Fitness, Ortonville
- Fitness Centers, Ortonville
- Florists, Ortonville - Flower Shops
- Flowers & Plants, Ortonville
- Food & Beverage Stores & Services, Ortonville
- Food & Beverages - Wholesale & Retail, Ortonville
- Food Services, Ortonville
- Fruit & Vegetable Growers, Ortonville
- Fruit & Vegetable Markets, Wholesale & Retail, Ortonville
- Fuel, Ortonville
- Fuel Dealers & Gas Stations, Ortonville
- Funeral Services, Crematory & Cemetery, Ortonville - Funeral Homes & Directors
- Furniture Stores, Ortonville
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