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Quick facts

LocationClayton, New York
Book onNew York State Parks

Amenities

  • Public land Public campground: State land.

From the park's listing on New York State Parks. Confirm details with the park before you book.

Other RV parks near Mary Island State Park

  • Keewaydin State Park Alexandria Bay, NY · 2.9 mi straight-line
  • Kring Point State Park Redwood, NY · 3.1 mi straight-line
  • Dewolf Point State Park Alexandria Bay, NY · 4.2 mi straight-line
  • Swan Bay Resort & Marina Alexandria Bay, NY · 5.1 mi straight-line
  • Wellesley Island State Park Alexandria Bay, NY · 5.7 mi straight-line
  • Grass Point State Park Clayton, NY · 7 mi straight-line
  • 1000 Islands Campground Alexandria Bay, NY · 7.2 mi straight-line
  • Back Bay Campground Hammond, NY · 13.7 mi straight-line
  1. Home
  2. New York
  3. Clayton
  4. Mary Island State Park

Mary Island State Park

State park · Clayton

This weekend · Sold out Oct 30 – Nov 1No site open for all your nights

Looking for the next open dates…
Book on New York State Parks
36661 CEDAR PT.STATE PK.DRIVE
Saving doesn't reserve a site.
SitesAmenities
Build around it

Things to do near Clayton

All activities →
Sightseeing & food

Boldt Castle and 2 Nation Tour

4.7 (907) 3.5 hrFree cancellation

Where Mary Island State Park fits

Nearest alternatives
Keewaydin State Park (2.9 mi) · Kring Point State Park (3.1 mi) · Dewolf Point State Park (4.2 mi)
Location
Policies

About this campground

Mary Island State Park is a New York State Parks campground in Clayton. It lists 1 tent site. Pets are allowed per the listing.

Highlights

  • Tent sites onlyOnly tent sites in the New York State Parks site list
  • Pets allowedListed on New York State Parks

Good for

Tent campingDogs

Know before you go

  • No RVs: tent sites only.
  • No hookups are listed.
  • Hospital
  • Hot Showers
  • Marina
  • Picnic Tables
  • Restroom
  • Shopping
All amenities

Amenities

HospitalHot ShowersMarinaPicnic TablesRestroomShoppingWater Fillup Station

Nearby activities

BoatingFishingGolfingPicnickingPowerboating

Find your campsite

Checking 2 nights (your saved dates or this weekend). Tell us what you're staying in to see matching sites and prices.

Every site at this campground

Availability checked Oct 26 on New York State Parks. Rates are the provider's nightly rates; totals are estimates before taxes & fees.

0 open of 1 site types
CBAA
Not available Oct 30–Nov 1
from $17/night

Book with New York State Parks

You book with the provider. Each row shows that provider's lowest open option for your dates, and which provider our main button uses.

New York State Parks (via ReserveAmerica feed)Main booking button
Availability & rates from this provider, checked Oct 26
Unavailable for your dates
Book with New York State Parks ↗
Pick your dates again on this provider's site.
View full availability calendar · night-by-night from ReserveAmerica

Availability checked Oct 26 on ReserveAmerica.

SiteFr
30
Sa
31
Price
CBAA
campsite
XXfrom $17

✓ available · R reserved · X not available · C closed · W first come, first served · N not yet released

Location & access

This weekend (Fri, Oct 30 – Sun, Nov 1): Book online. Reservations online on New York State Parks — open dates and rates come from the booking site.

Location

36661 CEDAR PT.STATE PK.DRIVE
Open in Google Maps ↗

Policies

Check-in
3:00 PM
Check-out
11:00 AM
Pets
Allowed (per listing)

About

Mary Island State Park comprises 12 heavily-wooded acres with steep rocky outcroppings. Twelve waterfront campsites are scattered throughout the park, offering seclusion and spectacular views of the Canadian shore or the shipping channel. Boats may be beached or moored near campsites. The park has a picnic area and several foot trails.

Policies & rules

Key facts

Pets
Allowed Listing
Booking
Reservable on ReserveAmerica Listing
Getting there
36661 CEDAR PT.STATE PK.DRIVE (map in Location below) Listing
Water
Not listed — check with campground
Price
Not listed — check with campground
All 15 facts with sources ↓
Why stay here and common questions

Why stay here?

  • Public-land campground run by a federal or state agency.
  • Showers on site (per listing).

Mary Island State Park: questions answered

What is the maximum RV length at Mary Island State Park?
No RV sites listed (per the listing)
How do I reserve a site at Mary Island State Park?
Reservable on ReserveAmerica (per the listing)
Are pets allowed at Mary Island State Park?
Allowed (per the listing)
At a glance: all 15 facts with sources

Quick facts

Agency / operatorNot listed
BookingOnline via ReserveAmerica (booking listing; window not listed)
Max RV / trailer lengthNot listed
Bear storageNot listed
SeasonNot listed
HookupsNot listed

"Not listed" means no source we use states it.

At a glance

Unavailable for your dates

View campground on New York State Parks ↗

Availability checked Oct 26 on New York State Parks.

You book each site directly with New York State Parks. Prices and availability can change until booked.

Sold out
from $32Continue to Viator
Boats & cruises

The Ultimate Heart of 1000 Islands Sightseeing Boat Tour

4.9 (638) 5 hrFree cancellation
from $84Continue to Viator
Boats & cruises

St Lawrence River - Rock Island Lighthouse on a Glass Bottom Boat Tour

4.6 (110) 2.8 hrFree cancellation
from $34Continue to Viator
Boats & cruises

1000 Islands Sunset Cruise from Clayton, NY

4.5 (108) 2 hrFree cancellation
from $27Continue to Viator

Official facts link to their source; “Listing” facts come from the ReserveAmerica listing. Anything we can't source says so.

Max rig length
Listing No RV sites listed
Pets
Listing Allowed
Shade
Listing 1 of 1 sites that report shade are listed as shaded
Booking
Listing Reservable on ReserveAmerica
Getting there
Listing 36661 CEDAR PT.STATE PK.DRIVE (map in Location below)
Hookups & power · Pull-through / back-in · Road & site access · Generators · Quiet hours · Cell signal · Starlink / satellite · Water · Price · Stay limits
Not listed — check with campground

Mary Island State Park is sold out for your dates — nearest alternatives

Closest stays by type. Distances are straight-line from Mary Island State Park, not driving.

  • Closest public campgroundWellesley Island State Park5.7 mi away (straight-line) · PublicAvailable for your datesA: from $155/nightCheck availability on New York State Parks ↗
  • Closest private full-hookupSwan Bay Resort & Marina5.1 mi away (straight-line) · PrivateAvailable for your datesStandard RV Site: from $75/nightCheck availability on Campspot ↗

Not confirmed open for your dates

  • Next closest1000 Islands Campground7.2 mi away (straight-line) · PrivateCheck availabilityCheck availability on Campspot ↗

Other stays nearby

Available Oct 30 – Nov 1 · 2 nights17 sites open for every night

Swan Bay Resort & Marina

5.1 mi from Mary Island State Park (straight-line) 4.9 · 21 Campspot reviews
Full-hookup RV sites · Cabins / glamping
Sites from $75/night
$150 total for Oct 30 – Nov 1 · before taxes & fees
Rates & availability from Campspot · you book on their site
View Campsites
Available Oct 30 – Nov 1 · 2 nights10 sites open for every night

Wellesley Island State Park

5.7 mi from Mary Island State Park (straight-line)
Tent sites · Full-hookup RV sites · Cabins / glamping
Sites from $155/night
$310 total for Oct 30 – Nov 1 · before taxes & fees
Rates & availability from New York State Parks · you book on their site
View Campsites
Availability not current

1000 Islands Campground

7.2 mi from Mary Island State Park (straight-line) 4.8 · 26 Campspot reviews
Tent sites · Full-hookup RV sites · Cabins / glamping
Last checked Oct 18 on Campspot; check dates on their site
Rates & availability from Campspot · you book on their site
View Campsites