The Southport Island Association (SIA) is a long-established civic organization located on Southport Island, in the Boothbay Harbor Region of Maine.
Founded in 1948, SIA has remained faithful to its original mission to:
- Preserve the Island's natural beauty
- Promote community interest
- Work on behalf of the Island's general welfare
- The Southport Island Association is a 501 (c) 3 non-profit organization.
- TO DOWNLOAD A MEMBERSHIP FORM CLICK HERE
- FOR A COMPACT LIST OF SIA EVENTS, CLICK HERE
- FOR SOUTHPORT/BOOTHBAY HARBOR TIDE INFORMATION, CLICK HERE.
- TO CHECK THE SOUTHPORT WEATHER, CLICK HERE.

