- Ice Cream & Frozen Yogurt, New Hartford
- Ice Making Equipment, New Hartford - Ice Machines
- Indian Restaurants, New Hartford
- Industrial & Commercial Cleaning Services & Companies, New Hartford
- Industrial & Commercial Real Estate, New Hartford
- Industrial & Heavy Equipment Repair & Service, New Hartford
- Industrial & Personal Service Paper, Boxes & Cardboard, New Hartford
- Industrial Contractors, New Hartford
- Industrial Equipment & Machinery, New Hartford
- Industrial Equipment & Machinery - Other, New Hartford
- Industrial Goods & Products - Hard Goods - Small, New Hartford
- Industrial Goods & Products - Soft - Large & Small, New Hartford
- Industry, New Hartford
- Information Bureaus & Services, New Hartford
- Insulation Contractors, New Hartford - Blown-In, Spray Foam, Batt, Fiberglass, Attic Insulation Installation & Service
- Insurance Bond & Finance, New Hartford
- Insurance Brokers, New Hartford
- Insurance Carriers, New Hartford
- Insurance Carriers By Specialty, New Hartford
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- Insurance Consulting & Information Services, New Hartford
- Insurance Farm, New Hartford
- Insurance Flood, New Hartford
- Insurance General Liability, New Hartford
- Insurance Motorcycles, New Hartford
- Insurance Real Property, New Hartford
- Insurance Renters, New Hartford
- Insurance Services, New Hartford
- Interior Designers, New Hartford
- Interior Designers & Decorators, New Hartford
- Internal Medicine Doctors, New Hartford - Internists Physicians & Surgeons
- Internet Entertainment, New Hartford - Internet Services
- Internet Marketing & Advertising Services, New Hartford
- Internet Services, New Hartford
- Internet Websites, New Hartford - Web Hosting, etc
- Investment Services & Advisors, New Hartford
- Iron, Steel & Metal Fabricators, New Hartford - Fabrication Companies
- Italian Restaurants, New Hartford
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