- Games & Hobbies, Montoursville
- Garage Doors & Gates, Montoursville - Stores & Companies - Install & Repair Services
- Garbage & Rubbish Removal, Montoursville
- Garment & Linen Services, Montoursville
- Gas Companies, Montoursville
- Gas Station, Montoursville - Service & Filling Station
- General Business Consulting, Montoursville
- General Business Services, Montoursville
- General Consultants, Montoursville
- General Freight Trucking, Montoursville - Motor Freight
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- General Management Consulting Services, Montoursville - Management Consultants
- General Merchandise Stores, Montoursville
- General Travel Agents & Agencies, Montoursville
- Glass & Glass Products, Montoursville
- Glass - Auto, Float, Plate, Window & Doors, Montoursville
- Gold, Silver & Platinum Buyers, Sellers & Dealers, Montoursville
- Gospel Church, Montoursville
- Government, Montoursville
- Grocery Stores & Supermarkets, Montoursville
- Ground Transportation, Except Passenger, Montoursville
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