- Games & Hobbies, Hewlett
- Garage Door Repair, Hewlett
- Garage Doors & Door Operating Devices, Hewlett
- Garage Doors & Gates, Hewlett - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Hewlett
- Garden & Lawn Sprinkler Repair, Installation & Service, Hewlett
- Garment & Linen Services, Hewlett
- Garment Pressing & Cleaners Agents, Hewlett - Laundries & Dry Cleaners
- Gas Station, Hewlett - Service & Filling Station
- General Business Services, Hewlett
- General Freight Trucking, Hewlett - Motor Freight
- General Hardware Stores, Hewlett
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- General Management Consulting Services, Hewlett - Management Consultants
- General Merchandise Stores, Hewlett
- General Travel Agents & Agencies, Hewlett
- Gift Baskets, Hewlett
- Gifts By Type & Occasion, Hewlett
- Gifts, Cards & Stationery Stores, Hewlett
- Golf Courses, Hewlett
- Gourmet Food Stores, Hewlett
- Government, Hewlett
- Greeting Card Stores, Hewlett
- Grocery Stores & Supermarkets, Hewlett
- Ground Transportation, Except Passenger, Hewlett
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