- Ice Cream & Frozen Yogurt, Jackson
- Individual & Family Information & Referral Services, Jackson
- Industrial & Commercial Cleaning Services & Companies, Jackson
- Industrial Contractors, Jackson
- Industrial Equipment & Machinery, Jackson
- Industrial Goods & Products - Hard Goods - Large, Jackson
- Industrial Goods & Products - Hard Goods - Small, Jackson
- Industrial Machinery Supplies & Equipment - Leasing & Rental, Jackson
- Industrial Supply, Parts & Equipment - Miscellaneous, Jackson
- Industrial Waste Recycling, Jackson
- Industry, Jackson
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- Insulation & Energy Conservation Materials, Jackson
- Insurance Carriers, Jackson
- Insurance Carriers By Specialty, Jackson
- Insurance Farm, Jackson
- Insurance Medicare, Jackson
- Insurance Real Property, Jackson
- Interior Designers & Decorators, Jackson
- Internal Medicine Doctors, Jackson - Internists Physicians & Surgeons
- Investment Management Services, Jackson
- Investment Services & Advisors, Jackson
- Italian Restaurants, Jackson
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