- Garage Building & Repair, Northville - Carports - Garage Builders
- Garage Door Repair, Northville
- Garage Doors & Door Operating Devices, Northville
- Garage Doors & Gates, Northville - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Northville
- Garbage & Rubbish Removal, Northville
- Garden & Lawn Sprinkler Repair, Installation & Service, Northville
- Garment & Linen Services, Northville
- Gas Companies, Northville
- Gas Engine, Northville
- Gas Station, Northville - Service & Filling Station
- General Business Consulting, Northville
- General Business Services, Northville
- General Consultants, Northville
- General Hardware Stores, Northville
- General Management Consultants & Services, Northville
- General Management Consulting Services, Northville - Management Consultants
- General Merchandise Stores, Northville
- General Travel Agents & Agencies, Northville
- Gift Baskets, Northville
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- Gift Shops, Northville - Gift, Novelty & Souvenir Stores
- Gifts By Type & Occasion, Northville
- Gifts Wholesale & Retail, Northville
- Gifts, Cards & Stationery Stores, Northville
- Glass & Glass Products, Northville
- Glass & Glazing Contractors, Northville
- Glass - Beveled, Carved, Etched & Ornamental, Northville
- Glass Stained & Leaded, Northville
- Glass Tinting & Coating, Northville - Home - Car Window Tinting
- Golf Clubs Private, Northville
- Golf Courses, Northville
- Golf Lessons & Instruction, Northville
- Goodyear Tires, Northville - Dealers
- Government, Northville
- Grading Contractors, Northville - Excavating - Excavation Companies
- Graphic Designer & Artist Services, Northville
- Grocery Stores & Supermarkets, Northville
- Ground Transportation, Except Passenger, Northville
- Gutters & Downspout Cleaning & Repairing, Northville
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