- Garages Auto Repairing Self Service, Cowansville
- Garbage & Rubbish Removal, Cowansville
- Garment & Linen Services, Cowansville
- Gas & Other Services Combined, Cowansville
- Gas Companies, Cowansville
- Gas Station, Cowansville - Service & Filling Station
- General Business Consulting, Cowansville
- General Business Services, Cowansville
- General Consultants, Cowansville
- General Merchandise Stores, Cowansville
- General Travel Agents & Agencies, Cowansville
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- Generators, Compressors, Pumps, Motors & Fans, Cowansville
- Geothermal Heating & Cooling Contractors, Cowansville - Geothermal HVAC - Installation
- Gifts, Cards & Stationery Stores, Cowansville
- Glass & Glass Products, Cowansville
- Glass - Auto, Float, Plate, Window & Doors, Cowansville
- Gloves Retail, Cowansville
- Golf Courses, Cowansville
- Government, Cowansville
- Grocery Stores & Supermarkets, Cowansville
- Ground Transportation, Except Passenger, Cowansville
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