Fee: Fees: mooring buoy $23. Reservations: Washington State Parks reservation system
About this park
Patos Island is a 207-acre marine park with dramatic rock formations, madrone trees and a working lighthouse. Visitors boat in and stay at a primitive campsite in the remote San Juan Islands. Mooring buoys are available, and the park is open 8 a.m. to dusk year round.
Patos Island Marine State Park FAQ
Where is Patos Island Marine State Park located?
Patos Island Marine State Park is in Eastsound, Washington, at Boat access only. GPS coordinates: 48.78467, -122.95589. Get directions.
Is there an entrance fee at Patos Island Marine State Park?
Fees: mooring buoy $23. Reservations: Washington State Parks reservation system. Fees can change by season, so confirm with the park before you go.
How do I contact Patos Island Marine State Park?
You can call (360) 376-2073. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Patos Island Marine State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Douglas Fir Campground (48.2 mi, reservable)
- Excelsior Group Camp (52.3 mi, reservable)
- Boulder Creek Campground (57.7 mi, reservable)
How current is this information about Patos Island Marine State Park?
This listing was last updated on October 9, 2026. If something is out of date, let us know and we'll fix it.