State park
Mary Island State Park
The park entrance is 1.9 miles from Alexandria Bay. Day use costs Vehicle use fee typically $6–$10 (varies by park/season). Mary Island State Park is a state park in Jefferson County, New York.
Mary Island State Park map
Mary Island State Park boundary from USGS PAD-US or the managing agency, simplified for display. Not for navigation or legal boundaries.
Fire restrictions
Fire restriction orders for this unit are not tracked here yet. Restrictions change with the season, so check the current orders before any campfire, stove or target shooting.
Common questions
- Entry to Mary Island State Park costs Vehicle use fee typically $6–$10 (varies by park/season).
- Mary Island State Park is 1.9 miles from Alexandria Bay.
- Yes, dogs are allowed at Mary Island State Park.
Before you go
Mary Island State Park is 1.9 miles from Alexandria Bay.
- Showers available
Trails
- Activities Golfing Trail Named on agency park page
What to see
- State park Designation in agency park name
- Island Named in agency park title
- State park system unit Listed on the agency park identity roster
Public lands next to Mary Island State Park
- State parkKeewaydin State Park is 2.4 miles away, straight line between the two boundaries.
- State parkKring Point State Park is 2.8 miles away, straight line between the two boundaries.
Measured between the units' boundaries as mapped in USGS PAD-US. Distances are straight line, not driving.
- parks.ny.gov (accessed 2026-09-30)
- en.wikipedia.org (accessed 2026-09-30)
- www2.census.gov (accessed 2026-09-30)
- parks.ny.gov (accessed 2026-09-30)
- newyorkstateparks.reserveamerica.com (accessed 2026-09-30)
- parks.ny.gov (accessed 2026-09-30)
- parks.ny.gov (accessed 2026-09-30)