- Games & Hobbies, Hartford City
- Garment & Linen Services, Hartford City
- Gas Station, Hartford City - Service & Filling Station
- General Business Services, Hartford City
- General Freight Trucking, Hartford City - Motor Freight
- General Merchandise Stores, Hartford City
- General Surgeons, Hartford City - General Surgery Doctors, Physicians & Surgeons
- Glass & Glass Products, Hartford City
- Glass & Glazing Contractors, Hartford City
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- Glass - Beveled, Carved, Etched & Ornamental, Hartford City
- Glass Bending Beveling Drilling Grinding Etcetera, Hartford City
- Golf Clubs Private, Hartford City
- Golf Courses, Hartford City
- Golf Equipment & Supplies Stores, Hartford City - Golf Clubs, Balls, Carts, Bags, Apparel, Shoes & Accessories
- Government, Hartford City
- Grocery Stores & Supermarkets, Hartford City
- Ground Transportation, Except Passenger, Hartford City
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