- Machinery, Supplies & Equipment - Construction & Contractor Related, Coopersburg
- Management Consultants & Services, Coopersburg
- Manicurists & Pedicurists, Coopersburg
- Manufacturing, Coopersburg
- Marketing Consultants Professional Practices, Coopersburg
- Marriage & Family Counselors, Coopersburg
- Masonry Contractors, Coopersburg - Stone Mason, Brick Mason - Install & Repair
- Masonry Materials & Supplies, Coopersburg
- Massage Therapists & Professional, Coopersburg
- Massage Therapy, Coopersburg
- Meat Market, Wholesale & Products, Coopersburg
- Membership Sports & Recreation Clubs, Coopersburg
- Mennonite Church, Coopersburg
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- Mental Health Specialists, Coopersburg - Psychologist, Psychiatrist, Psychotherapist, etc
- Mexican Restaurants, Coopersburg
- Miscellaneous Government, Coopersburg
- Miscellaneous Professional, Coopersburg
- Moravian Churches, Coopersburg
- Mortgage Bankers & Correspondents, Coopersburg
- Mortgages & Loans, Coopersburg
- Motor Vehicle, Coopersburg
- Motor Vehicle Rental & Leasing, Coopersburg
- Motorcycle Parts, Accessories & Dealers, Coopersburg
- Moving Truck Rental , Coopersburg
- Mulch, Peat & Moss Products, Coopersburg
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