Seaquest State Park

State park · Cowlitz County

Seaquest State Park

State park · Cowlitz County
3030 Spirit Lake Hwy, Castle Rock, WA 98611

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Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null
Seaquest State Park by null

Highlights

Nestled on a 475-acre wetland with stunning views of Mount St. Helens, Seaquest State Park offers spacious campsites, yurts, and ample hiking trails for a perfect nature getaway.  

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3030 Spirit Lake Hwy, Castle Rock, WA 98611 Get directions

parks.state.wa.us

Information

Static Map

3030 Spirit Lake Hwy, Castle Rock, WA 98611 Get directions

+1 360 274 8633
parks.state.wa.us

Features

wheelchair accessible parking lot
wheelchair accessible entrance

Last updated

Mar 5, 2025

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Doug H

Google
Seaquest State Park is a fantastic place to camp in an RV, tent, or even a Yurt! It’s also a great place to have a picnic in the day use area, where there is a small playground, and swings. There is also an abundance of horseshoe pits (Discover Pass Required)! It is a short walk/hike to Mount St Helens Visitor center, and the Silver Lake Wetlands Trail. Which has beautiful views of Mt St Helens, and Silver Lake. There is even a tunnel going under the highway connecting the two, so you don’t need to play Frogger getting there! The campground has fairly spacious sites, fire rings, and pick nick tables on concrete slabs. I do have to say that there is little to no privacy between most of the sites in the RV loop, but for the price with full hookups it is worth it! The only downside that I truly saw is that the sewer connections are pretty high off the ground, so your standard sewer trellis is almost useless if you don’t want standing water in the line! The bathrooms are clean enough to use. In the RV loop there is one stall with a toilet and a shower in the men’s and women’s bathroom, which might be problematic during the busy season! There is a pay per use dump station, as well as drinking water near the exit of the campground…which is a plus if you didn’t have a full hookup site! There are many hiking trails around the campground and park area, most of which appear to be easy to possibly moderate, depending on your abilities. A WORD TO THE WISE, FROM MY UNDERSTANDING THE ONLY SITES THAT HAVE RUNNING WATER THIS TIME OF YEAR IS IN THE RV LOOP, AND THE REST OF THE SITES YOU HAVE TO GET WATER FROM THE POTABLE WATER AT THE DUMP STATION BECAUSE EVERYTHING ELSE HAS BEEN WINTERIZED! All in all, we had a wonderful relaxing time, and we will be back to this State Park!

Adam Vengroff

Google
Beautiful scenery in a historic area! The campsites were mostly level and a good amount of full hook up RV sites. We were happy with our spots and the facilities. Bonus. It is directly across from the Mt St Helens Visitor Center. Although, we did not explore the park much, it appeared there was lots to do Great price, 1st come, 1st served spots a plenty.

Twinkle Hazarika

Google
We spent two fantastic nights camping at Seaquest State Park and had a blast! The campsites offered a perfect blend of nature immersion with plenty of trees for shade, yet still felt spacious. Here's what really impressed us: Cleanliness: Big thumbs up for the restrooms! They were clean and well-maintained, making our camping experience even more enjoyable. Nature's Playground: Hikers and nature enthusiasts will love this park. We explored miles of well-maintained trails, perfect for a refreshing escape. Mount St. Helens Connection: The park's proximity to the visitor center made it a convenient home base for our volcano adventures.

Jennifer Jones

Google
First time camping at Seaquest. We camped in yurt #5 during the week. Yurt was very nice and clean. The mattresses on the bunk bed, and the futon were nicer quality and more comfortable than we have experienced in other yurts. We were disappointed that the table & benches were so high. This is not ideal if you are short. We moved them over as far as possible and made due with our camping chairs and a folding table at night. If you are staying in the summer months, yurt number 5 gets quite a bit of sunshine and is very hot during the day. The screens help to vent and it was comfortable to sleep at night. All other yurts are more shaded. Also, yurt #5 backs up to a large field including horseshoes. There was more noise and activity around this yurt because of that. On the plus side, yurt#5 was one of the closest to parking which was nice for loading and unloading. Bathrooms throughout the park were very clean. There are 2 unisex toilets within walking distance of the yurts. But there are no showers in the yurt loop at all. We were surprised by that. You can drive over and park near the ranger station at a bathroom that has one shower for men/1 for women. Also very thankful that most of the other yurts were empty as 2 toilets to service up to 8 people per 5 yurts may have been inconvenient at times. Overall, we would stay here again.

KOI Pond

Google
We stayed one night in April 2024. Due to being early in the season two of the loops were not open for campers. I was pleasantly surprised with this park. Most sites were fairly large with many pull throughs. Some of the bathrooms had been updated and shower tokens were no longer required. There are some good trails behind the "yurt village" and the north loop. Also in front of the Ranger's Home there is a tunnel under the road which takes you to a raised trail through a wetland. At the southwest end of the wetland trail, and within walking distance of the campground is Mt St Helens Visitor Center. We would certainly return to this park.

Jordan Duncan

Google
Great facility on any day. Robyn and Alysa are absolutely phenomenal - national treasures themselves. A wealth of knowledge, great exhibits, and a nice path through nature make this a great place to visit. Even a model volcano in the middle to walk down into.

Lisa Bagley

Google
A beautiful, quiet little State Park across the street from one of the Mt. St. Helen's Interpretive Centers. The recent renovations to the bathroom and shower facilities were much appreciated!

Morgan Jeffrey

Google
Had an absolute blast camping at Seaquest! For only $32 a night to camp you have access to water at your campsite, fire pit, room for 2-3 tents, dog friendly, tables and grills all over park, play structure, and restrooms with showers! There is many trails at Seaquest and the Mt. St Helen's center across the street has a cool 1 mile looped trail with a boardwalk. Great place to bring bikes. My favorite part was how many squirrels and chipmunks were everywhere and Stellar Jay's (blue jay with Mohawk). My family rented the private campsite which is 2 camp sites in one for about $70 a night and it comes with the undercover area I have pictured. Silver lake is within 5 minutes away just take a left when leaving the park and it's on Kerr road, with a boat launch and perfect for paddle boarding or kayaking. I would definitely return here had a great experience.