About

St. Marys Island is nestled within the picturesque Thousand Islands region along the US-Canada border. This island forms part of the United States’ territory and is specifically located in Jefferson County, New York. The island falls under the jurisdiction of the village of Alexandria Bay, a charming area known for its scenic beauty and as a popular destination for tourists exploring the Thousand Islands archipelago.

Although details about the island’s specific features are limited, its location in the Thousand Islands places it among a unique collection of islands renowned for their natural beauty and recreational opportunities. The area is a haven for boating, fishing, and enjoying the tranquil waters of the St. Lawrence River. St. Marys Island contributes to the rich tapestry of this iconic region, which draws visitors with its enchanting landscapes and historical charm.

Island or Feature Name
St. Marys Island

Nationality
US

Centroid Lat/Long

Two-Minute Box

Location and description

Former, informal, or alternate names

Municipality
Alexandria Bay (V)

County
Jefferson

Province / State
NY

Ports?

Book refs

1000islands.co ID #
1151

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Data source.