- Games & Hobbies, Collinsville
- Garage Door Repair, Collinsville
- Garage Doors & Door Operating Devices, Collinsville
- Garage Doors & Gates, Collinsville - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Collinsville
- Garbage & Rubbish Removal, Collinsville
- Garment & Linen Services, Collinsville
- Gas & Air Compressors, Collinsville
- Gas Station, Collinsville - Service & Filling Station
- General Business Consulting, Collinsville
- General Business Services, Collinsville
- General Consultants, Collinsville
- General Management Consulting Services, Collinsville - Management Consultants
- General Merchandise Stores, Collinsville
- General Travel Agents & Agencies, Collinsville
- Generator Sales & Rental, Collinsville - Contractors Supplies & Equipment
- Generators, Compressors, Pumps, Motors & Fans, Collinsville
- Gift Baskets, Collinsville
- Gift Shops, Collinsville - Gift, Novelty & Souvenir Stores
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- Gifts By Type & Occasion, Collinsville
- Gifts, Cards & Stationery Stores, Collinsville
- Glass & Glass Products, Collinsville
- Glass - Auto, Float, Plate, Window & Doors, Collinsville
- Glass - Beveled, Carved, Etched & Ornamental, Collinsville
- Go Kart Tracks, Collinsville
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Collinsville
- Gourmet Restaurants, Collinsville
- Government, Collinsville
- Graphic Design Services, Collinsville - Graphic Designer
- Graphic Designer & Artist Services, Collinsville
- Greeting Card Stores, Collinsville
- Grocery Stores & Supermarkets, Collinsville
- Ground Transportation, Except Passenger, Collinsville
- Guide & Directory Advertising Services, Collinsville
- Gun Repair & Services, Collinsville
- Guns & Gunsmith Services, Collinsville
- Gutters & Downspout Cleaning & Repairing, Collinsville
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