CampgroundsDB

Patos Island Marine State Park

Its 7 sites are first-come, first-served (no reservations), camping costs Primitive and water trail sites $12/night (statewide rate), and it is open year-round. Patos Island Marine State Park is a State Park campground near Birch Bay, Washington.

First-come, first-served

State Park · Birch Bay, Washington

Camping area on Patos IslandPatos Island Light Station
Camping area on Patos IslandPatos Island Light Station1 / 2

Camping area on Patos Island. Photo: Bureau of Land Management Oregon and Washington, Public domain

Managed by
State Park
Hookups
None

Patos Island Marine State Park sits inside San Juan Islands National Monument. Its camping rule, field office, and boundary are on publiclandsdb.com.

Getting a site

Managed by
State Park
Reservations
None, first-come
Fee
Primitive and water trail sites $12/night (statewide rate)
Entrance fee
None for campers in the park they stay in; Discover Pass $10/day or $45/year for day visits

Source: parks.wa.gov, accessed 2026-09-29

Sites and hookups

Total sites
7
Hookups
None
  • ✓ Toilets
  • ✓ Pets allowed
  • ✕ Potable water

On site: Toilets and pets allowed. No potable water.

Source: parks.wa.gov, accessed 2026-09-29

Rules

Stay limit
10 nights in one park within a 30-day period; 90 nights per calendar year in all state parks
Quiet hours
10 p.m. to 6:30 a.m.
Pets
Allowed

Source: parks.wa.gov, accessed 2026-09-29

Access and cell service

Elevation
88 ft

Cell coverage by carrier (FCC map)

AT&T
No coverage at the campground; 4G LTE and 5G mapped about 0.3 mi away
T-Mobile
No coverage at the campground; 4G LTE mapped about 0.2 mi away, 5G about 0.3 mi away
Verizon
4G LTE
Source: FCC Broadband Data Collection, data as of December 31, 2025

Outdoor coverage each carrier reports to the FCC at this campground's map point, and the nearest mapped coverage within about half a mile. The FCC map only includes 4G LTE at 5/1 Mbps or better and 5G; a weaker signal, a text, or an emergency call may still get through, but don't count on it. These are carrier predictions, not measurements, and can be wrong either way: real service in canyons, under trees, and inside a tent or vehicle is often weaker. 5G speeds are the FCC's 7/1 and 35/3 Mbps tiers. This product uses the FCC Data API but is not endorsed or certified by the FCC.

48.7847, -122.9559 in San Juan. Open in OpenStreetMap. Map © OpenStreetMap contributors.

Open in Google Maps Directions

Season and winter services

Patos Island Marine State Park is open year-round . In winter: water off, per the managing agency.

Sources: parks.wa.gov, accessed 2026-09-29; epqs.nationalmap.gov, accessed 2026-09-29

Common questions

Do you need a reservation at Patos Island Marine State Park?
No. Patos Island Marine State Park is first-come, first-served: there is no reservation system, so arrive early to claim an open site.
How much does it cost to camp at Patos Island Marine State Park?
Camping at Patos Island Marine State Park costs Primitive and water trail sites $12/night (statewide rate).
Is there a separate entrance fee at Patos Island Marine State Park?
No, there is no separate entrance fee at Patos Island Marine State Park; only the camping fee applies.
How many campsites does Patos Island Marine State Park have?
Patos Island Marine State Park has 7 campsites.
Does Patos Island Marine State Park have RV hookups?
No. Patos Island Marine State Park has no hookups.
Is there drinking water at Patos Island Marine State Park?
No. Patos Island Marine State Park has no potable water, so bring all the water you need.
Are dogs allowed at Patos Island Marine State Park?
Yes, pets are allowed at Patos Island Marine State Park.
When is Patos Island Marine State Park open?
Patos Island Marine State Park is open year-round.
Is Patos Island Marine State Park open in winter?
Yes, Patos Island Marine State Park is open year-round; in winter the water is shut off.
How long can you stay at Patos Island Marine State Park?
The stay limit at Patos Island Marine State Park is 10 nights in one park within a 30-day period; 90 nights per calendar year in all state parks.
Is there cell service at Patos Island Marine State Park?
Yes, outdoors: the FCC's National Broadband Map (data as of December 31, 2025) shows 4G LTE from Verizon at Patos Island Marine State Park. It shows none at Patos Island Marine State Park from AT&T or T-Mobile, though AT&T shows 4G LTE and 5G about 0.3 mi away and T-Mobile shows 4G LTE about 0.2 mi away and 5G about 0.3 mi away. The map is carrier-reported and modeled for outdoors, so expect weaker service in canyons, under trees, and inside a tent or vehicle.
Who manages Patos Island Marine State Park?
Patos Island Marine State Park is managed by the state park system.

Around Patos Island Marine State Park

fishypedia.com · 10 miles

The nearest lake with a fishing page is Cascade Lake, whose mapped center point is 10 miles away in a straight line. Stocking record and species: Cascade Lake fishing on fishypedia.com.

Public land · within 15 miles

Public land within 15 miles: Moran State Park (11 miles to its center) , Birch Bay State Park (12 miles to its center) , Jones Island State Park (12 miles to its center) , Stuart Island State Park (13 miles to its center) , and Obstruction Pass State Park (14 miles to its center) ; publiclandsdb.com has each unit's camping rules and boundary.

Hot springs nearby

swimholesmap.com · within 30 miles

The nearest hot spring to Patos Island Marine State Park, in a straight line: Doe Bay Resort Hot Springs (hot spring, 12 miles). Each has its own page on swimholesmap.com.

First-come Sucia Island Marine State Park Birch Bay · State Park Season Year-round Fee Primitive and water trail sites $12/night (statewide rate) First-come Point Doughty Roche Harbor · State Forest Season Not on record Fee No camping fee (first come, with a Discover Pass) First-come Matia Island Marine State Park Birch Bay · State Park Season Year-round Fee Primitive and water trail sites $12/night (statewide rate) Reservable Moran State Park Olga · State Park Season Year-round Fee Peak nightly (statewide): standard $31-$43

More campgrounds: camping near Birch Bay and campgrounds in San Juan.

Sources

Photo credits

First-come, first-served Primitive and water trail sites $12/night (statewide rate)
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