- Games & Hobbies, Ansonia
- Garage Building & Repair, Ansonia - Carports - Garage Builders
- Garage Doors & Door Operating Devices, Ansonia
- Garage Doors & Gates, Ansonia - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Ansonia
- Garbage & Rubbish Removal, Ansonia
- Garment & Linen Services, Ansonia
- Gas Appliance Repair, Maintenance & Service, Ansonia
- Gas Station, Ansonia - Service & Filling Station
- Gastroenterologists, Ansonia - GI Doctors, Physicians & Surgeons (Gastroenterology)
- General Business Services, Ansonia
- General Hardware Stores, Ansonia
- General Merchandise Stores, Ansonia
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- General Travel Agents & Agencies, Ansonia
- Generators, Compressors, Pumps, Motors & Fans, Ansonia
- Gifts, Cards & Stationery Stores, Ansonia
- Glass & Glass Products, Ansonia
- Glass - Auto, Float, Plate, Window & Doors, Ansonia
- Gourmet Restaurants, Ansonia
- Government, Ansonia
- Granite, Ansonia
- Graphic Design Services, Ansonia - Graphic Designer
- Graphic Designer & Artist Services, Ansonia
- Grocery Stores & Supermarkets, Ansonia
- Ground Transportation, Except Passenger, Ansonia
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