- Games & Hobbies, Jerseyville
- Garage Doors & Door Operating Devices, Jerseyville
- Garage Doors & Gates, Jerseyville - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Jerseyville
- Garment & Linen Services, Jerseyville
- Gas Companies, Jerseyville
- Gas Engine, Jerseyville
- Gas Station, Jerseyville - Service & Filling Station
- General Business Consulting, Jerseyville
- General Business Services, Jerseyville
- General Consultants, Jerseyville
- General Merchandise Stores, Jerseyville
- General Travel Agents & Agencies, Jerseyville
- Gift Shops, Jerseyville - Gift, Novelty & Souvenir Stores
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- Gifts, Cards & Stationery Stores, Jerseyville
- Glass & Glass Products, Jerseyville
- Glass - Auto, Float, Plate, Window & Doors, Jerseyville
- Golf Courses, Jerseyville
- Government, Jerseyville
- Grain Elevators, Jerseyville
- Graphic Design Services, Jerseyville - Graphic Designer
- Graphic Designer & Artist Services, Jerseyville
- Greeting Card Stores, Jerseyville
- Grills & Grilling Equipment & Supplies, Jerseyville
- Grocery Stores & Supermarkets, Jerseyville
- Ground Transportation, Except Passenger, Jerseyville
- Gutter Covers, Jerseyville
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