- Garment & Linen Services, Marion
- Gas Chemicals, Marion
- Gas Station, Marion - Service & Filling Station
- General Business Services, Marion
- General Hardware Stores, Marion
- General Merchandise Stores, Marion
- Gift Shops, Marion - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Marion
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- Glass & Glass Products, Marion
- Glass - Auto, Float, Plate, Window & Doors, Marion
- Government, Marion
- Grain Elevators, Marion
- Granite, Marion
- Grocery Stores & Supermarkets, Marion
- Ground Transportation, Except Passenger, Marion
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