- Gas Station, Ritzville - Service & Filling Station
- Gasoline, Ritzville
- General Business Services, Ritzville
- General Freight Trucking, Ritzville - Motor Freight
- General Merchandise Stores, Ritzville
- Gift Shops, Ritzville - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Ritzville
- Glass & Glass Products, Ritzville
- Glass & Glazing Contractors, Ritzville
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- Glass - Auto, Float, Plate, Window & Doors, Ritzville
- Glass Repair, Ritzville - Car, Window, Auto Glass Repair
- Golf Courses, Ritzville
- Government, Ritzville
- Grain Elevators, Ritzville
- Greeting Card Stores, Ritzville
- Grocery Stores & Supermarkets, Ritzville
- Ground Transportation, Except Passenger, Ritzville
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