Possession Point State Park (Cascadia Marine Trail): campground in Island County, Washington
Run this campground? Correct anything on this page free — no card, no account.
Looking for the office number? Their Google Maps listing may have it →
The area: This campground sits about 9 miles southwest of Everett (about 110,000 people), in Island County. 10 other RV parks and campgrounds lie within about 15 miles.
For guests
- Amenities: OpenStreetMap lists electric hookups, dump station, restrooms. Amenity data comes from OpenStreetMap and can be incomplete.
- Getting there: use the map above for directions. Always call ahead to confirm the campground is open and has a site for your rig.
- Long-term stays: if you're looking for a monthly or seasonal site, ask the office — many campgrounds keep a few long-term spots separate from nightly bookings.
- Paying: ask how the campground takes payment. Parks that run on Lot Sidekick give long-term guests clear, itemized bills for rent and submetered utilities.
Common questions
Where is Possession Point State Park (Cascadia Marine Trail)?
Possession Point State Park (Cascadia Marine Trail) is a campground in Island County, Washington, in Island County (coordinates 47.90824, -122.37661 per OpenStreetMap).
Is this Possession Point State Park (Cascadia Marine Trail)'s official website or phone number?
No. This is Possession Point State Park (Cascadia Marine Trail)'s page in the Lot Sidekick RV park & campground directory, built from OpenStreetMap. We're independent of the campground and can't take messages for it. The campground's own contact is listed above.
What amenities does Possession Point State Park (Cascadia Marine Trail) have?
OpenStreetMap lists electric hookups, dump station, restrooms. Amenity data is community-maintained on OpenStreetMap and may be incomplete — contact the campground to confirm hookups, rates, and availability.
Does Possession Point State Park (Cascadia Marine Trail) take long-term or monthly stays?
OpenStreetMap doesn't record stay length, so check with the campground directly. Many campgrounds in Washington offer monthly or seasonal sites alongside nightly ones.
Nearby in Island County
- Island County Fairgrounds · Island County · Campground
- Cascade Marine Trail - Camano Island State Park · Island County · Campground
- Camano Island State Park Campground · Island County · Campground
- Fort Casey State Park Campground · Island County · Campground
- Fort Ebey State Park Campground · Island County · Campground
Free tools for this park
- Park value & profitability estimator: what a park earns on its monthly sites, and what that's worth.
- Submeter calculator: two meter reads in, an at-cost tenant bill out — the same math for a submetered electric pedestal or a water meter.
- Prorated rent calculator: the exact first- or last-month charge when a monthly guest arrives mid-cycle.
- RV park & campground billing: how Lot Sidekick bills long-term and seasonal sites on one flat price.
Source: OpenStreetMap (tourism=caravan_site and camp_site), via the Overpass API, as of July 22, 2026. © OpenStreetMap contributors, ODbL (opendatacommons.org/licenses/odbl). Listings are community-maintained and can lag real life. See something out of date? Tell us, or claim the page.