About

East Mary Island sits within the picturesque Thousand Islands region, nestled on the US side of the border. This charming island is part of the Excelsior Group and can be found northwest, or downriver, from Point Marguerite on the US mainland. With its coordinates placing it in the heart of the Thousand Islands, East Mary Island is a part of the rich tapestry of natural beauty and complex waterways that define this area.

Administratively, East Mary Island falls under the jurisdiction of the municipality of Alexandria, within Jefferson County, New York. The island’s location in the Thousand Islands offers a unique perspective on the interplay between land and water, characteristic of this region. While it may not have any known alternate names, its identity as part of the Excelsior Group highlights its connection to the broader geographic and cultural landscape of the Thousand Islands.

Island or Feature Name
East Mary Island

Nationality
US

Centroid Lat/Long
442200N 0755327W

Two-Minute Box
44^22′ x 75^52′

Location and description
In or near The Excelsior Group, northwest (downriver) of Point Marguerite (of US mainland)

Former, informal, or alternate names

Municipality
Alexandria

County
Jefferson

Province / State
NY

Ports?

Book refs

1000islands.co ID #
335

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Data source.