- Games & Hobbies, Smithville
- Garage Doors & Door Operating Devices, Smithville
- Garage Doors & Gates, Smithville - Stores & Companies - Install & Repair Services
- Garage Equipment & Accessories, Smithville
- Garage, Door & Window Products, Smithville
- Garbage & Rubbish Removal, Smithville
- Garment & Linen Services, Smithville
- Gas Station, Smithville - Service & Filling Station
- General Business Consulting, Smithville
- General Business Services, Smithville
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- General Consultants, Smithville
- General Freight Trucking, Smithville - Motor Freight
- General Hardware Stores, Smithville
- General Merchandise Stores, Smithville
- Generators, Compressors, Pumps, Motors & Fans, Smithville
- Gifts, Cards & Stationery Stores, Smithville
- Government, Smithville
- Granite, Smithville
- Grocery Stores & Supermarkets, Smithville
- Ground Transportation, Except Passenger, Smithville
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