- Games & Hobbies, Portland
- Garage Doors & Door Operating Devices, Portland
- Garage Doors & Gates, Portland - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Portland
- Garment & Linen Services, Portland
- Gas Companies, Portland
- Gas Station, Portland - Service & Filling Station
- General Business Services, Portland
- General Merchandise Stores, Portland
- General Travel Agents & Agencies, Portland
- Generators, Compressors, Pumps, Motors & Fans, Portland
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- Geothermal Heating & Cooling Contractors, Portland - Geothermal HVAC - Installation
- Geothermal Heating & Cooling Equipment, Systems & Supplies, Portland
- Gifts, Cards & Stationery Stores, Portland
- Glass & Glass Products, Portland
- Glass Stained & Leaded, Portland
- Golf Courses, Portland
- Government, Portland
- Graphic Design Services, Portland - Graphic Designer
- Graphic Designer & Artist Services, Portland
- Grocery Stores & Supermarkets, Portland
- Ground Transportation, Except Passenger, Portland
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