Mary Island State Park

New York State Park · Jefferson County

CountyJefferson
CampingYes

Mary Island State Park entrance fee

Vehicle Entry: Day Use $6 Toll Booth Hours: 8:30AM to 3:30PM

Mary Island State Park hours

Open from Memorial Day weekend to Labor Day.

2026 Camping Season: 5/22 - 9/6

2026 Boat Dockage Season: 5/22 - 9/6

Hours as published by NY State Parks. Check the official page before a long drive.

About Mary Island State Park

Twelve heavily wooded acres reachable only by boat, with steep rocky outcrops looking out to the Canadian shore and the shipping channel. Boats moor or beach beside the campsites; foot trails cross the rest.

Things to do

  • 🎣 Fishing
  • ⛵ Boating

Amenities & facilities

  • 🏕️ Campsites
  • 🚿 Showers

Camping options

  • Campsites

Contact

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