Mary Island State Park
New York· Campsite openings, cancellations & sold-out date alerts
Weekend availability
Live from ReserveCalifornia · checked Jul 23, 3:07 PM PT- Fri, Jul 24Open1/1 campgrounds
- Fri, Jul 31Open2/1 campgrounds
- Fri, Aug 7Open2/1 campgrounds
- Fri, Aug 14Open2/1 campgrounds
- Fri, Aug 21Open2/1 campgrounds
- Fri, Aug 28Open2/1 campgrounds
Sold out for your dates? We'll tell you the second a site opens.
Cancellations at Mary Island State Park get rebooked in minutes. We check New York State Parks around the clock and alert you before the crowd refreshes the page.
The alert
Here's what lands the second a site opens.
The moment a campsite frees up at Mary Island State Park, we send it — with the dates and a one-tap link to book it on New York State Parks before anyone else. Most alerts go out within minutes.
How GetParkAlerts works
- 01
Set your alert for Mary Island State Park
Tell us your dates and how many nights. Takes about 30 seconds.
- 02
We watch, around the clock
We check New York State Parks every few minutes for the cancellations that vanish before most people notice.
- 03
You get the alert first
Email or push the instant a matching site frees up. You book it directly with the park — we just get you there first.
How booked is Mary Island State Park?
as of July 23Sites are open right now — we found space out to Aug. That changes fast at a state park. We check Mary Island State Parkaround the clock, so the moment your dates fill up and a cancellation reopens them, you'll be first to know.
Weekends (Saturday night)
Availability checked directly against the reservation system.
Park type
Islands
New York State Parks system
Online booking
Available on New York State Parks
Official state reservation system
Alert coverage
Checked around the clock
Openings, cancellations & new dates
Where Mary Island State Park is
Getting a campsite at Mary Island State Park
How do I get a campsite at Mary Island State Park when it's sold out?
Cancellations happen constantly — the trick is being first to know. Set an alert for your dates and we'll watch Mary Island State Park on New York State Parks around the clock, then notify you the moment a site opens. Alerts run on a Pro subscription ($9.99/mo, cancel anytime).
When do campsites usually open up at Mary Island State Park?
Whenever someone cancels. Most reservation systems refund less the closer you get to arrival, so cancellations cluster in the days before a stay — but the openings themselves are unpredictable, which is exactly why watching for them beats refreshing the page.
How fast do cancelled sites get rebooked at Mary Island State Park?
At high-demand New York parks a cancelled summer-weekend site is often rebooked within minutes — sometimes under a minute. Being notified the instant it opens, with your New York State Parks login and payment already saved, is the difference between getting in and missing it.
Where do I book a campsite at Mary Island State Park?
Reservations for Mary Island State Park are made on New York State Parks, the official booking system for New York State Parks. GetParkAlerts is independent — we tell you when a site opens; you book it directly on the official site.
Does GetParkAlerts reserve the site for me?
No — we never hold or book sites. We tell you the second one opens so YOU can book it on New York State Parks before anyone else. Booking always happens on the official state system.
Parks near Mary Island State Park
Flexible on where you camp? Watch a few of these too — more parks, better odds.
- Kring Point State Park3 mi away
- Dewolf Point State Park4 mi away
- Wellesley Island State Park6 mi away
- Grass Point State Park7 mi away
- Canoe Point State Park9 mi away
- Cedar Island State Park9 mi away
- Cedar Point State Park18 mi away
- Burnham Point State Park22 mi away
- Eel Weir State Park29 mi away
- Sackets Harbor Battlefield State Historic Site31 mi away
- Westcott Beach State Park34 mi away
- Robert G Wehle State Park38 mi away