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Welcome to the Chamber Alliance of Mason County Welcome to Mason County Michigan a business and development ready community with ample resources for new and existing businesses. Imagine working where you love to play. Our Northern Michigan communityfocused coastal town offers a unique backdrop for living and working in a picturesque region with abundant natural resources and opportunities that support an active lifestyle. Directory Join Events Login Chamber Alliance of Mason County Want to join a dynamic group of business professionals focused on communitywide success for Mason County.