- Games & Hobbies, Wilton
- Garage Building & Repair, Wilton - Carports - Garage Builders
- Garbage & Rubbish Removal, Wilton
- Garment & Linen Services, Wilton
- Gas Station, Wilton - Service & Filling Station
- General Business Consulting, Wilton
- General Business Services, Wilton
- General Consultants, Wilton
- General Management Consulting Services, Wilton - Management Consultants
- General Merchandise Stores, Wilton
- General Surgeons, Wilton - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Wilton
- Generators, Compressors, Pumps, Motors & Fans, Wilton
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- Geothermal Heating & Cooling Contractors, Wilton - Geothermal HVAC - Installation
- Gift Shops, Wilton - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Wilton
- Glass & Glass Products, Wilton
- Glass Plate Windows, Wilton
- Golf Course Construction, Wilton
- Golf Lessons & Instruction, Wilton
- Gourmet Food Stores, Wilton
- Government, Wilton
- Graphic Design Services, Wilton - Graphic Designer
- Graphic Designer & Artist Services, Wilton
- Grocery Stores & Supermarkets, Wilton
- Ground Transportation, Except Passenger, Wilton
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