Castle Island is an island off the coast of Mainland Village in the Town of Manchot, Gravenhurst Region. The island is mainly used as residential purpose and is home to over 80 people.

The term Castle Islands refer to the island chain involving Castle Island and Pear Island, a very small island just off Castle Island's coast.


  • Manchot Castle


The island can be reached by Castle Island Avenue. The island can also be reached with a holiday bus route, operating at a limited service frequency by Pickering Transit. Services provided by Pickering Transit is subject to extra fare when crossing the Gravenhurst Region - Pickering County Border.