The Thacher Island Association (TIA) was established in 1981 by the Thacher Island Town Committee (TITC) as a non-profit group dedicated to raising funds for the restoration and on-going maintenance of the Island . The Town of Rockport owns the southern end of the Island and manages it via the TITC and TIA. The northern end is owned by U.S. Fish and Wildlife Service (U.S.F&WS) and is managed by the Town under an agreement with U.S.F&WS.
Today the TIA boasts a membership of over 750 individuals, families and local businesses. The Board of Directors is composed of 13 members, 4 of which are officers and meets monthly. A member of the U.S. Fish and Wildlife Service usually attends. All members are volunteers. A newsletter is sent to members 2 times a year and a web site has been created and receives on average over 2000 “hits” per month.