- Adult & Geriatric Social Services, Falkville
- Adult Care Services, Falkville
- Adult Foster Care, Falkville
- Advertising, PR & Marketing Services, Falkville
- Agents Brokers & Planning Services, Falkville
- Agriculture, Falkville
- Air Transportation, Except Passenger, Falkville
- Alarms, Signaling & Security Equipment & Systems, Falkville
- Animal Feeds, Falkville
- Apartment Building Operators, Falkville
- Apartments & Buildings, Falkville
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- Appliance Repair & Service, Falkville
- Appliances Ironers, Falkville
- Arts & Crafts Supplies & Stores, Falkville
- Arts & Culture, Falkville
- Assisted Living Facilities, Falkville
- ATV & RV Dealers, Falkville - All-Terrain & Recreational Vehicles
- Auto Parts, Accessories, Equipment & Supplies, Falkville
- Auto Repair Shops & Maintenance Service, Falkville - Auto Mechanic & Car Repair Shops
- Auto Repair Shops - General, Falkville
- Auto Utility Trailers, Falkville
- Auto, Car & Truck Accessories, Falkville
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