About

Mulcaster Island, nestled in the Thousand Islands region along the Canada-US border, is part of the picturesque landscape of Ontario. Positioned at approximately 44° 20′ 33″ N latitude and 76° 03′ 04″ W longitude, the island lies within Leeds and Thousand Islands, a municipality known for its rich natural beauty. This island is situated in or near The Navy Group, a cluster of islands renowned for their serene and scenic surroundings.

Historically, Mulcaster Island has been known by a couple of alternate names, including “Rubidge” and “Sugar.” These names reflect the island’s storied past and the different identities it has carried over time. Located within Leeds and Grenville County in Ontario, Mulcaster Island is part of a region celebrated for its diverse array of islands that dot the St. Lawrence River, offering a unique combination of natural landscapes and historical intrigue.

Island or Feature Name
Mulcaster Island

Nationality
Canada

Centroid Lat/Long
44° 20′ 33″ N – 76° 03′ 04″ W

Two-Minute Box
44^22′ x 76^02′

Location and description
In or near The Navy Group

Former, informal, or alternate names
“Rubidge”, “Sugar”

Municipality
Leeds and Thousand Is.

County
Leeds and Grenville

Province / State
ONT

Ports?

Book refs

1000islands.co ID #
818

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Data source.