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Nantucket Insurance

​Our growth is dependent on continually developing positive customer relationships, sharing industry standards and best practices with our community and operating a business of integrity.  Through education we better understand obstacles and create opportunities and through good citizenship we strengthen the community in which we live and work.​

who we are

Each of our Nantucket Island insurance clients have a unique portfolio of assets and liabilities needing to be insured. We offer annual reviews, early renewals, extended hours and we can come to you in order to help you, your family and your business maintain the risk management program that is right for you.

we believe in a customized consulting experience for every client.

Nan Gilch, founder and CEO of Island Insurance Agency, LLC "washed ashore" Nantucket Island in 1995.  Her love of Nantucket and entrepreneurial spirit came together in early 2015 with the opportunity to serve the Nantucket community with her education and experience of insurance.


Nan and her three boys are all active in Nantucket non-profits, sports and the Nantucket Island Community.  Nan serves as Chair of the Marketing and Membership Development Committee at the Nantucket Island Chamber of Commerce, serves as a member of the board of the Friends of Nantucket Public Schools and sits on several other Nantucket non-profit committees.  Nan achieved her Bachelors of Science in International Business from SNHU and is currently completing her CPCU (Chartered Property and Casualty Underwriters) in Commercial Business Insurance in pursuance of better serving the Community of Nantucket Island.

our approach

Mission Statement

​At Island Insurance Agency, LLC our goal is to make your insurance experience pleasant.  Thorough reviews, timely responses, courtesy calls and professional customer service is what you can expect from our boutique insurance agency.

Island insurance agency - ceo

Island insurance agency, llc