Castle Island, Alberta

Originally known as "Constance Island", this island was the site chosen by Indian Agent, Charles de Caze, for an impressive summer home. The island later became known as "Castle Island". == Demographics ==

In the 2021 Census of Population conducted by Statistics Canada, the Summer Village of Castle Island had a population of 15 living in 9 of its 18 total private dwellings, a change of from its 2016 population of 10. With a land area of , it had a population density of in 2021. In the 2016 Census of Population conducted by Statistics Canada, the Summer Village of Castle Island had a population of 10 living in 7 of its 19 total private dwellings, a change from its 2011 population of 19. With a land area of , it had a population density of in 2016. == See also ==