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Mary Island State Park

New York · NY

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Managed by New York Office of Parks, Recreation and Historic Preservation

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We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this park using the links above before you go — you are responsible for compliance. Last verified by us: Oct 14, 2026. Spot an error in our data?

About

A small island park in the St. Lawrence River with views of the Canadian shore and the shipping channel. It can only be reached by boat.

Source: parks.ny.gov

From Wikipedia

Mary Island State Park is a 13-acre (5.3 ha) state park located in the St. Lawrence River in Jefferson County, New York. The park is situated in the Town of Alexandria on the east end of Wellesley Island, and is accessible only by boat.

Source: Wikipedia — text licensed CC BY-SA 4.0. Verify alerts and operational details with the managing agency below.

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Hunting in this park

This park overlaps hunting units

During hunting seasons, wear blaze orange and check regulations — see the New York hunting page

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