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Mary Island State Park, Alexandria Bay, NY
Sports & OutdoorsOutdoor AdventureLocal Gem

Mary Island State Park

Boat out to a small wooded island in the Thousand Islands to picnic, fish, dock for the day or pitch a tent above the shipping channel.

East end of Wellesley Island, St. Lawrence River, Town of Alexandria, NY (boat access only) · Alexandria Bay, NY

About Mary Island State Park

Mary Island State Park is about 12 wooded acres of rocky outcrops at the east end of Wellesley Island in the St. Lawrence River, with views of the Canadian shore and the shipping channel. The state bought it in 1897, making it one of New York's first St. Lawrence parks. You can only get there by boat, about 2 miles from Keewaydin State Park, 2.5 miles from DeWolf Point or 4 miles from Grass Point, and rentals are available nearby. Day dockage is $6 and tent sites cost $15 a night, plus $5 for non-New York residents.

  • #state park
  • #island camping
  • #boating
  • #fishing
  • #thousand islands

What's around here?

The closest stops to Mary Island State Park, ordered by straight-line distance.

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    Outdoor Adventure

    Keewaydin State Park

    Under $25

    Camp above the St. Lawrence River in the Thousand Islands, swim in the summer pool and dock at the marina just outside Alexandria Bay.

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    Canoe-Picnic Point State Park

    Check prices

    Boat out to Grindstone Island to tie up, picnic, camp or rent a rustic cabin in one of New York's oldest Thousand Islands parks.

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    Cedar Point State Park

    Under $25

    Swim from a sheltered sandy beach, launch a boat and camp on the St. Lawrence River in one of New York's oldest state parks.

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    Jacques Cartier State Park

    Under $25

    Swim from a sandy beach on a sheltered St. Lawrence River bay, then fish, boat or camp at this 461-acre North Country state park.

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  • Sports & Outdoors
    Outdoor Adventure

    Burnham Point State Park

    Under $25

    Pitch a tent beside the St. Lawrence River and fish or launch a boat into the Thousand Islands from a small, quiet state park campground.

    22 mi awayMore like this

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    Family Favorite

    Thompson Park

    Under $25

    Walk an Olmsted-designed park above Watertown and visit Zoo New York, home to animals native to Northern New York.

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