- Games & Hobbies, Portland
- Garage Building & Repair, Portland - Carports - Garage Builders
- Garbage & Rubbish Removal, Portland
- Garment & Linen Services, Portland
- Gas Station, Portland - Service & Filling Station
- Gemologists & Jewelers, Portland
- General Business Services, Portland
- General Merchandise Stores, Portland
- Generators, Compressors, Pumps, Motors & Fans, Portland
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- Glass & Glass Products, Portland
- Glass - Auto, Float, Plate, Window & Doors, Portland
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Portland
- Golf Courses, Portland
- Golf Equipment & Supplies Stores, Portland - Golf Clubs, Balls, Carts, Bags, Apparel, Shoes & Accessories
- Government, Portland
- Grease & Oil Disposal Sites, Portland
- Grocery Stores & Supermarkets, Portland
- Ground Transportation, Except Passenger, Portland
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