- Garage Door Repair, Norwalk
- Garage Doors & Door Operating Devices, Norwalk
- Garage Doors & Gates, Norwalk - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Norwalk
- Garden & Lawn Sprinkler Repair, Installation & Service, Norwalk
- Garment & Linen Services, Norwalk
- Garment Pressing & Cleaners Agents, Norwalk - Laundries & Dry Cleaners
- Gas Companies, Norwalk
- Gas Detection, Asbestos & Lead Contractors, Norwalk
- Gas Station, Norwalk - Service & Filling Station
- General Business Consulting, Norwalk
- General Business Services, Norwalk
- General Consultants, Norwalk
- General Electric Appliances, Norwalk
- General Freight Trucking, Norwalk - Motor Freight
- General Hardware Stores, Norwalk
- General Management Consulting Services, Norwalk - Management Consultants
- General Merchandise Stores, Norwalk
- General Travel Agents & Agencies, Norwalk
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- Gift Shops, Norwalk - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Norwalk
- Gifts Wholesale & Retail, Norwalk
- Gifts, Cards & Stationery Stores, Norwalk
- Glass & Fiber Glass Materials, Norwalk - Wholesale, Manufacturers & Suppliers
- Glass & Glass Products, Norwalk
- Glass - Auto, Float, Plate, Window & Doors, Norwalk
- Glass Plate Windows, Norwalk
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Norwalk
- Golf Courses, Norwalk
- Golf Equipment Repair & Sales, Norwalk - Clubs, Carts, Bags & More
- Government, Norwalk
- Granite, Norwalk
- Graphic Design Services, Norwalk - Graphic Designer
- Graphic Designer & Artist Services, Norwalk
- Grocery Stores & Supermarkets, Norwalk
- Ground Transportation, Except Passenger, Norwalk
- Gym Equipment & Supplies, Norwalk
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