- Machinery, Supplies & Equipment - Business Supplies Related, Collinsville
- Major Appliances, Collinsville - Household & Kitchen
- Manicurists & Pedicurists, Collinsville
- Manufacturing, Collinsville
- Manufacturing Products, Collinsville
- Medical & Health Service Organizations, Collinsville
- Medical Equipment, Supplies, Devices & Instruments - Repair & Service, Collinsville
- Medical Supplies & Equipment, Collinsville
- Membership Sports & Recreation Clubs, Collinsville
- Men's Clothing Stores, Collinsville - Clothes & Accessories
- Metal Detecting Equipment, Collinsville
- Methodist Church, Collinsville
- Mexican Restaurants, Collinsville
- Ministers, Collinsville
- Miscellaneous Commercial & Industrial Supplies & Equipment Rental & Leasing, Collinsville
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- Miscellaneous Government, Collinsville
- Miscellaneous Personal Services, Collinsville
- Miscellaneous Professional, Collinsville
- Modular & Mobile Homes For Sale, Collinsville - Manufactured Homes Sale & Service
- Mortgage Bankers & Correspondents, Collinsville
- Mortgages & Loans, Collinsville
- Motor Vehicle, Collinsville
- Motor Vehicle Rental & Leasing, Collinsville
- Motorcycle Parts, Accessories & Dealers, Collinsville
- Moving Companies, Collinsville
- Moving Truck Rental , Collinsville
- Music, Collinsville
- Musical Instruments & Equipment Stores, Collinsville
- Musical Instruments Repair, Sales & Service, Collinsville
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