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About


KorthaseFlinn is one of Northern Michigan’s largest independent insurance and financial services firms. We began as a family-owned business in the 1930’s and while we have grown substantially, we continue to carry on the legacy of client trust and superior personal service that our company was founded on. Today we operate three offices and service over ten thousand clients throughout the Midwest.


Our full-service agency delivers impeccable expertise in the following areas

Why work with KorthaseFlinn?

Other firms sell insurance…We advise clients. The professionals at KorthaseFlinn apply their experience and expertise to solve clients’ risk management problems and to help them protect and accumulate assets. KorthaseFlinn has purposefully developed a culture of expertise. Work with us and you will find that we focus on knowledge, resources and bringing you the right solution at the right price.

Boyne City Office

1150 Boyne Avenue
Boyne City, MI 49712
Phone: (231) 582-6512
Fax: (231) 582-7130

Petoskey Office

1098 Bay View Rd.
Petoskey, MI 49770
Phone: (231) 348-8121
Fax: (231) 582-7130

East Jordan Office

100 Main St., Suite 10
East Jordan, MI 49727
Phone: (231) 536-2268
Fax: (231) 582-7130

Gaylord Office

Coming Soon

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