- Games & Hobbies, Columbia City
- Garage Doors & Door Operating Devices, Columbia City
- Garage Doors & Gates, Columbia City - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Columbia City
- Garment & Linen Services, Columbia City
- Gas & Air Compressors, Columbia City
- Gas Station, Columbia City - Service & Filling Station
- General Business Services, Columbia City
- General Freight Trucking, Columbia City - Motor Freight
- General Hardware Stores, Columbia City
- General Merchandise Stores, Columbia City
- General Surgeons, Columbia City - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Columbia City
- Generators, Compressors, Pumps, Motors & Fans, Columbia City
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- Geothermal Heating & Cooling Contractors, Columbia City - Geothermal HVAC - Installation
- Gift Shops, Columbia City - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Columbia City
- Glass, Plastic & Rubber Working Machinery, Columbia City
- Golf Cars & Carts, Columbia City
- Golf Courses, Columbia City
- Gospel Church, Columbia City
- Government, Columbia City
- Grain Elevators, Columbia City
- Granite, Columbia City
- Grocery Stores & Supermarkets, Columbia City
- Ground Transportation, Except Passenger, Columbia City
- Gun Repair & Services, Columbia City
- Guns & Gunsmith Services, Columbia City
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