- Machine Shop & Tool Repair Service, Fox Lake
- Machinery, Supplies & Equipment - Business Production Related, Fox Lake
- Machinery, Supplies & Equipment - Business Supplies Related, Fox Lake
- Machinery, Supplies & Equipment - Construction & Contractor Related, Fox Lake
- Mailbox Rental Services, Fox Lake
- Malls & Shopping Centers, Fox Lake
- Management Consultants & Services, Fox Lake
- Manicurists & Pedicurists, Fox Lake
- Manufacturing, Fox Lake
- Manufacturing Products, Fox Lake
- Marinas & Marina Services, Fox Lake
- Marine Electronic Equipment, Fox Lake
- Marine Supplies & Equipment, Fox Lake - Boat Supplies
- Marriage & Family Counselors, Fox Lake
- Mechanical Contractors, Fox Lake - Install, Service & Repair
- Medical Supplies & Equipment, Fox Lake
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- Membership Sports & Recreation Clubs, Fox Lake
- Metal Plating & Polishing, Fox Lake
- Mexican Restaurants, Fox Lake
- Mining, Fox Lake
- Miscellaneous Household Item Repair, Fox Lake
- Miscellaneous Government, Fox Lake
- Miscellaneous Manufacturing, Fox Lake
- Miscellaneous Personal Services, Fox Lake
- Miscellaneous Photographers, Fox Lake
- Mortgage Bankers & Correspondents, Fox Lake
- Mortgages & Loans, Fox Lake
- Motor Vehicle, Fox Lake
- Motor Vehicle Rental & Leasing, Fox Lake
- Movie Theaters, Fox Lake
- Moving Truck Rental , Fox Lake
- Muffler Shop & Exhaust Systems, Fox Lake
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