- Games & Hobbies, Lawrenceville
- Garage Building & Repair, Lawrenceville - Carports - Garage Builders
- Gas Companies, Lawrenceville
- Gas Station, Lawrenceville - Service & Filling Station
- General Business Consulting, Lawrenceville
- General Business Services, Lawrenceville
- General Consultants, Lawrenceville
- General Hardware Stores, Lawrenceville
- General Merchandise Stores, Lawrenceville
- Geothermal Heating & Cooling Contractors, Lawrenceville - Geothermal HVAC - Installation
- Geothermal Heating & Cooling Equipment, Systems & Supplies, Lawrenceville
- Gift Shops, Lawrenceville - Gift, Novelty & Souvenir Stores
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- Gifts, Cards & Stationery Stores, Lawrenceville
- Glass & Glass Products, Lawrenceville
- Glass - Auto, Float, Plate, Window & Doors, Lawrenceville
- Gliders & Sailplanes, Lawrenceville
- Government, Lawrenceville
- Gratings Metal, Lawrenceville
- Grocery Stores & Supermarkets, Lawrenceville
- Ground Transportation, Except Passenger, Lawrenceville
- Gun Repair & Services, Lawrenceville
- Guns & Gunsmith Services, Lawrenceville
- Gymnastics Schools, Lawrenceville
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