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The Island lies between the two headlands of Point Boston and Cape Donnington. These two headlands enclose the world’s second largest natural harbour. Boston Island forms a perfect natural breakwater, protecting the town from strong northerly seas. 


Boston Island is named after Boston in England where Captain Matthew Flinders learned to tie knots, read a compass and row a boat; paving his future to becoming a famous maritime explorer. 

The island is 960-hectares or 2,400-acres, located in Boston Bay, Spencer Gulf, South Australia. Owned by the Davis family since 1954, it has been primarily used for grazing sheep and was also once the location of a proposed township called Kerrillyilla at the southern end of the island. 

The island features a number of beaches including Squeaky Beach at the northern end, Homestead Beach to the north-west, Picnic Beach on the southern end and Cemetery Beach on the central west coast. 

Fauna species recorded on Boston Island or in adjacent waters include: Little Penguins, Bush stone-curlews, Pied and Sooty oystercatchers, Hooded plovers, Fairy terns, Eastern ospreys, White-bellied sea eagles, Australian sea lions, New Zealand fur seals and Southern right whales.


As well as Boston Island being known for its captivating scenery and native wildlife, there are many historical points on the island. 50 history stones have been located around the island both inland and on the coast. They all have fascinating stories attached to them explaining the rich history of the island.

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