Barrier Beach Civic Association,
established 1975 (formerly known as the Oak Beach Civic Association)
http://barrierbeachcivicassociation.com/
Great South Bay Isles Association,
incorporated 1962
http://gsbia.kaprojects.com/
Oak Island Beach Association
(home owners association)
West Gilgo Beach Association,
established c. 1939
Girl Scouts
https://www.gssc.us/
Scouts BSA
https://beascout.scouting.org/