Island Info - Great Diamond Island, Maine

Great Diamond Island is an island in Casco Bay, Maine. It is part of the city of Portland, Maine. As of the 2000 census, the island had a year-round population of 77. The island is not easily accessible by motor vehicle and has a limited network of roads. The primary modes of transportation are golf carts and bicycles. This fact has become a selling point for the island, marketing the area as "car free" and "kid friendly."

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We provide year-round ferry services, scenic cruises and boat tours from Portland, Maine to the islands of Casco Bay such as
Peaks Island, Little Diamond Island, Great Diamond Island, Chebeague Island, Diamond Cove, Long Island and Bailey Island.
We also offer scenic cruises, summer-time music cruises, private charters and lobster bakes. Join us and see where the Maine coast really begins!
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Ferry Terminal: 56 Commercial Street, Portland, Maine | Mailing Address:P.O. Box 4656, Portland, ME 04112-4656
Phone: (207) 774-7871 | Fax: (207) 774-7875 | Email:info@cascobaylines.com