- Ice Cream & Frozen Yogurt, Parkersburg
- Ice Wholesale, Parkersburg - Dry Ice
- Ignition Apparatus Manufacturers, Parkersburg
- Importers, Parkersburg
- Independent Synagogues, Parkersburg
- Individual & Family Information & Referral Services, Parkersburg
- Individual & Family Services, Parkersburg
- Industrial & Commercial Cleaning Services & Companies, Parkersburg
- Industrial & Commercial Real Estate, Parkersburg
- Industrial & Heavy Equipment Repair & Service, Parkersburg
- Industrial & Heavy Equipment Vehicle Rental & Leasing, Parkersburg
- Industrial & Heavy Vehicle Dealers, Parkersburg
- Industrial & Personal Service Paper, Boxes & Cardboard, Parkersburg
- Industrial Contractors, Parkersburg
- Industrial Developers, Parkersburg
- Industrial Equipment & Machinery, Parkersburg
- Industrial Filters, Parkersburg
- Industrial Goods & Products - Hard Goods - Large, Parkersburg
- Industrial Goods & Products - Hard Goods - Small, Parkersburg
- Industrial Goods & Products - Soft - Large & Small, Parkersburg
- Industrial Lifts, Parkersburg
- Industrial Machinery Supplies & Equipment - Leasing & Rental, Parkersburg
- Industrial Supply, Parts & Equipment - Miscellaneous, Parkersburg
- Industrial Tools, Parkersburg
- Industrial Trucks, Parkersburg
- Industrial Vehicle Repair, Parkersburg
- Industrial Waste Recycling, Parkersburg
- Industry, Parkersburg
|
- Information Bureaus & Services, Parkersburg
- Inspection & Testing Services, Parkersburg
- Insulation & Energy Conservation Materials, Parkersburg
- Insulation Contractors, Parkersburg - Blown-In, Spray Foam, Batt, Fiberglass, Attic Insulation Installation & Service
- Insurance Attorneys & Lawyers, Parkersburg
- Insurance Attorneys & Lawyers, Parkersburg
- Insurance Brokers, Parkersburg
- Insurance Carriers, Parkersburg
- Insurance Consulting & Information Services, Parkersburg
- Insurance Farm, Parkersburg
- Insurance General Liability, Parkersburg
- Insurance Lawyers & Attorneys, Parkersburg
- Insurance Major Medical, Parkersburg
- Insurance Motorcycles, Parkersburg
- Insurance Renters, Parkersburg
- Insurance Services, Parkersburg
- Insurance Underwriters, Parkersburg
- Internal Medicine Doctors, Parkersburg - Internists Physicians & Surgeons
- International Community Of Christ Church, Parkersburg
- Internet - Voice Application, Parkersburg
- Internet Providers, Parkersburg
- Internet Services, Parkersburg
- Investment Bankers, Parkersburg
- Investment Services & Advisors, Parkersburg
- Investments & Mutual Funds, Parkersburg
- Iron Work Contractors, Parkersburg
- Iron, Steel & Metal Fabricators, Parkersburg - Fabrication Companies
- Italian Restaurants, Parkersburg
|