Mary Island State Park
New York State Park · Jefferson County
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
Phone315-482-9381
🎒 Gear up for Mary Island State Park
Popular gear for what this park offers:
- Tents
- Fishing rods
- Life jackets
- Bug spray
- Coolers
- Sleeping bags
- Camp chairs
- Camp stoves
- Lanterns
- Tackle kits
- Dry bags
- Sunscreen
- First aid kit
- Water bottles
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