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135 campgrounds and RV Parks near Castle Rock, WA. Compare campsite amenities, photos, and site types to find the perfect stop for your rig on your route.
135 campgrounds
8809 campsites
79 RVs available for delivery
From $15/night
Own an RV? Earn up to $24,738/year.
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Best campgrounds near Castle Rock, WA
Longview North / Mount St Helens KOA Journey
Castle Rock, WA (3 miles away)
$$$$$
(88 sites)
+4
Toutle River RV Resort
Castle Rock, WA (3 miles away)
$$$$$
(306 sites)
+7
Paradise Cove Resort and RV Park
Castle Rock, WA (4 miles away)
Seaquest State Park
Castle Rock, WA (5 miles away)
$$$$$
(88 sites)
+7
Silver Lake Resort
Washington (5 miles away)
$$$$$
(19 sites)
+6
Silver Cove RV Resort
Washington (7 miles away)
$$$$$
(130 sites)
+9
Brookhollow RV Park
Kelso, WA (9 miles away)
$$$$$
Rivers Edge RV Campground
Toledo, WA (10 miles away)
$$$$$
(30 sites)
+2
Kid Valley Campground
Washington (16 miles away)
$$$$$
(25 sites)
+4
Lewis and Clark State Park
Toledo, WA (18 miles away)
$$$$$
(39 sites)
+6
RV Outdoor adventures and Cabins
Clatskanie, OR (18 miles away)
$$$$$
(30 sites)
+5
Clatskanie River Inn and RV Park
Clatskanie, OR (18 miles away)
$$$$$
(10 sites)
+3
Most common amenities
Toilets Pet friendly Tables Showers Grills Internet Dump station Laundry Firewood Playground
Campgrounds near Castle Rock, Washington
Castle Rock sits just off Interstate 5 in Cowlitz County, southwest Washington, and serves as the main staging point for trips up State Route 504, the Spirit Lake Memorial Highway leading toward Mount St. Helens National Volcanic Monument. The town is small and functions mostly as a supply stop, with camping concentrated at nearby state and private parks rather than in town itself.
The closest developed options for RV travelers include Longview North / Mount St Helens KOA Journey and Toutle River RV Resort, both easy to reach from I-5, plus Paradise Cove Resort and RV Park. Farther east along Highway 504, Seaquest State Park sits directly across from the Mount St. Helens Visitor Center at Silver Lake, connected by a pedestrian tunnel, and Silver Lake Resort is nearby with direct lake access.
The region is heavily forested, low in elevation, and mild for most of the year, which allows several campgrounds to operate on a year-round or extended-season schedule.
Things to do near Castle Rock
Most trips center on Mount St. Helens. The Mount St. Helens Visitor Center at Silver Lake covers the 1980 eruption with exhibits, a theater, and a boardwalk trail across the wetlands, and it is connected to Seaquest State Park by a pedestrian tunnel. Farther up Highway 504, the Science and Learning Center at Coldwater offers crater views, a short interpretive trail, and access to the Hummocks Trail and Coldwater Lake Recreation Area. Johnston Ridge Observatory and the upper stretch of SR 504 past the winter gate remain closed while WSDOT rebuilds the Spirit Lake Outlet Bridge, with a reopening currently targeted for 2027.
Closer to camp, Silver Lake is popular for trout and bass fishing, kayaking, and swimming. Seaquest State Park has several miles of forested trails plus a short ADA-accessible path. The Toutle and Cowlitz Rivers offer fishing, and the south side of the volcano provides access to Ape Cave lava tubes.
Camping spots and RV parks near Castle Rock, WA
When to visit Castle Rock
- spring
March - May
59° / 39°F 95 mmCool and showery; wildflowers appear on monument trails
- summer
June - August
75° / 50°F 30 mmWarm, dry, peak season; book sites weeks ahead
- fall
September - November
59° / 43°F 115 mmRain returns by November; elk viewing along Toutle valley
- winter
December - February
46° / 34°F 175 mmWettest season, mild but very rainy; some site water shut off
Summer is the practical camping season. June through early September is the driest and warmest window, with long daylight hours and reliable road access to the west-side Mount St. Helens sites. This is also the busiest window: full-hookup sites at Seaquest State Park and the private resorts along Highway 504 fill weeks ahead for weekends and holidays, so reservations should be made early.
Spring and fall are cooler and wetter, but shoulder-season trips work well for travelers wanting quieter campgrounds. Wildflowers appear along monument trails in late spring, and fall brings elk viewing along the Toutle River valley and reduced crowds at the interpretive centers. Steady rain returns from late October onward.
Winter camping is possible but limited. Seaquest State Park stays open year-round, and some private RV parks operate through the winter, but water can be shut off at individual sites during freezes and the upper reaches of Highway 504 close seasonally. Lowland snow is uncommon but not unheard of.
Top Hosts near Castle Rock, WA
AY
Andrey13 trips - Joined Jun 2022
Had a very good time on this RV! Recommend to anyone!
Kirill V. - Jan 2026
I am so happy that we chose to rent from Andrey. We went on a 13 day trip with our 3 small kids, when we picked the RV up it was IMMACULATE. So clean, smelled amazing, and fully stocked with everything we could have needed. Even down to camp chairs for our kids. We had zero issues with it on our long trip, communication with the host was amazing, and I could not recommend him enough. Best experience ever!
Kayla F. - Oct 2024
PR
Paige7 trips - Joined Apr 2022
I would rate my experience with Paige as a 10/10. Good communication and everything was as promised. The trailer was clean, well maintained, and thoughtfully stocked with everything we needed. We did experience an unexpected problem with the trailer during our trip, but Paige handled it perfectly to ensure our trip continued seamlessly without interruption and without inconveniencing my wife and I. I definitely recommend working with Paige.
Michael B. - Mar 2026
Paige was so well prepared and helpful in our renting experience with her. The RV was fantastic for our needs.
Gerry G. - Aug 2025
How to book a campground near Castle Rock
Seaquest State Park reservations are handled through the Washington State Parks system at washington.goingtocamp.com or by phone at 888-CAMPOUT. Sites can be booked up to nine months in advance of the arrival date, and a Discover Pass is required for day-use parking. The park offers 52 standard sites, 18 partial-hookup sites, 15 full-hookup sites, three hiker/biker sites, and five yurts, so filter by site type when searching.
Private parks near Castle Rock, including Longview North / Mount St Helens KOA Journey, Toutle River RV Resort, Paradise Cove Resort and RV Park, and Silver Lake Resort, take reservations directly through their own websites or by phone, and some are also listed on major RV booking platforms. For summer weekends and holidays such as the Fourth of July or Labor Day, book two to three months out. Confirm rig-length limits and hookup type at time of booking, especially for larger Class A motorhomes.
What to expect at Castle Rock campgrounds
Sites in the area are typically forested, level to moderately sloped, and set among tall Douglas fir. Seaquest State Park has an open T-loop of pull-through full-hookup sites plus more private standard and partial-hookup loops in the trees; maximum site length is 50 feet, and cell service can be spotty. Restrooms with free hot showers, a dump station, and a playground are on site.
Private parks along the corridor lean more toward pull-through RV sites with full hookups, laundry, and Wi-Fi, which suits travelers using Castle Rock as an overnight stop between Portland and Seattle. Silver Lake Resort adds direct lake access for fishing and small boats.
Expect mosquitoes in summer near the wetlands, plan for rain gear in any season, and be aware that black bears and elk are present in the surrounding forest. Level blocks are useful; some state park sites need them.
Own an RV? Earn up to $24,738/year.
List your motorhome or travel trailer for free on RVezy.
Frequently asked questions about campgrounds near Castle Rock, WA
How much does it cost to rent an RV in Castle Rock, WA?
An RV rental in Castle Rock is one of the most budget-friendly ways to experience Mount St. Helens country. On RVezy you will typically find travel trailers starting around $90 to $140 per night, Class C motorhomes from $175 to $250, and larger Class A rigs from $250 to $400. Because hosts set their own pricing, you can sort by price, sleeps, and RV type to match your budget. Looking for a cheap RV rental in Castle Rock? Travel midweek, choose a smaller travel trailer with delivery to Seaquest State Park, and aim for May or late September when nightly rates drop after the summer peak. Bundling delivery with a 3+ night stay often unlocks host discounts.
rvezy.com/rv-search?SearchAddress=Castle%20Rock%2C%20WashingtonWhat license do I need to rent an RV in Castle Rock?
Your regular driver's license is all you need to rent an RV in Castle Rock. Washington State does not require a commercial driver's license (CDL) or any special RV endorsement for personal motorhomes or trailers within standard weight limits, so Class B campervans, Class C motorhomes, and travel trailers are all fair game. RVezy approved drivers must generally be at least 25 years old, and your ID is verified through the platform during booking, so there is no extra paperwork at pickup. Visiting from outside the U.S.? Bring your home-country license plus an International Driving Permit (IDP) and you are set to roll toward Mount St. Helens.
help.rvezy.com/hc/en-us/articles/360039008774-Understanding-approved-driver-requirementsIs my RV rental protected if something goes wrong on the trip?
Every RVezy booking in Castle Rock includes a renter protection plan plus 24/7 roadside assistance, so you can focus on the Spirit Lake Highway views and not the what-ifs. During checkout you choose the protection level that fits your trip, and that plan covers eligible accidental damage to the RV during your rental period. If you hit a pothole on State Route 504 or have a slide-out hiccup at camp, you have support to lean on. First time renting an RV? Many Castle Rock guests choose a mid-tier plan as a balance of coverage and value. Review the plan details at checkout so you know exactly what is included.
help.rvezy.com/hc/en-us/articles/34008759079835-RVezy-renter-protection-plans-in-detailWhat if I need to cancel my Castle Rock RV rental?
Booking your Castle Rock RV trip is low-risk because RVezy sets a standardized cancellation policy across the platform, not individual hosts. There is a short grace period right after booking, and partial refunds may apply depending on how far in advance you cancel. Special situations, like wildfire smoke advisories or major Cascade winter storms, are reviewed by RVezy's support team. Because the policy is standardized, you will not see a separate cancellation policy on individual listings. Book early to claim the best rigs for your Mount St. Helens weekend, knowing the cancellation terms are the same regardless of which host you choose.
help.rvezy.com/hc/en-us/articles/360037736674-Understanding-the-cancellation-policy-for-guestsCan I bring my dog on a Castle Rock RV trip?
Yes, and your pup will love it. Many Castle Rock hosts offer pet-friendly RV rentals, just toggle the Pet-Friendly filter on RVezy to see them instantly. Once you are on the road, dogs are welcome on-leash at Seaquest State Park, on the Silver Lake Wetlands Boardwalk at the Mount St. Helens Visitor Center, and along the Hummocks Trail near the blast zone (leashed, on-trail only). Dogs are not permitted on most backcountry trails inside Mount St. Helens National Volcanic Monument, but they are great companions for riverside walks along the Cowlitz. Message your host before booking to confirm pet fees (typically $10 to $25 per night) and you are set for a tail-wagging adventure.
parks.wa.gov/know-before-you-go/rules-policies/pets-parksCan the RV be delivered to my campsite near Castle Rock?
Yes, RV delivery in Castle Rock is one of the smartest ways to start your trip, especially if it is your first time. Many local hosts will drive the RV to Seaquest State Park, Toutle River RV Resort, Silver Lake Resort, or even a private property in the Toutle Valley, level it, hook up power and water, and walk you through every system before they leave. That means no towing stress, no backing into a tight site, and no learning curve in the dark. Filter listings by Delivery on RVezy to see who offers it. Ask your host about a setup and pack-down package so you can simply arrive and enjoy.
parks.wa.gov/find-parks/state-parks/seaquest-state-parkHow far can I drive on a typical Castle Rock RV rental?
You have plenty of range to explore. Most Castle Rock hosts include 100 to 150 free miles per night, with extra miles available at roughly $0.35 to $0.50 each, and some listings even offer RV rental with unlimited mileage, ideal for a longer loop. To put that in perspective: it is about 52 miles up State Route 504 to the Johnston Ridge area, about 50 miles south to Portland, Oregon, around 130 miles north to Seattle, and roughly 100 miles to Mount Rainier National Park's Nisqually entrance. If you are planning a big route, filter for unlimited mileage rigs and confirm the policy in the listing before you book.
rvezy.com/rv-search?SearchAddress=Castle%20Rock%2C%20WashingtonWhere are the best campgrounds near Castle Rock for an RV trip?
You are spoiled for choice. Top campgrounds near Castle Rock for RV camping include Seaquest State Park (directly across SR-504 from the Mount St. Helens Visitor Center, with utility sites, hot showers, and yurts), Toutle River RV Resort (resort-style with a pool, store, and easy volcano access), Silver Lake Resort (lakefront with fishing access), and Cedars RV Park in Castle Rock proper. Seaquest fills up months ahead for July and August weekends, so reserve through the Washington State Parks system the moment your trip dates are firm. Booking delivery from your RVezy host can simplify arrival at any of these parks.
parks.wa.gov/find-parks/state-parks/seaquest-state-parkWhen is the best time to visit Castle Rock in an RV?
The sweet spot for an RV rental in Castle Rock is mid-June through mid-September, when daytime highs sit around 70 to 80°F, rainfall drops sharply (July and August are the driest months), and State Route 504 is fully open to the Johnston Ridge area. August is typically the warmest and driest month, ideal for hiking and stargazing over Silver Lake. Shoulder season in May and late September brings cooler highs in the 60s, fewer crowds, and lower nightly rates, a great value window. Winters are mild (40s by day) but very wet, so pack rain gear if you are chasing waterfalls in the off-season.
weather.gov/sew/I have never driven an RV before. Will I be okay around Castle Rock?
You have got this. Castle Rock is one of the easier places in Washington to learn, since most local roads are wide, flat farmland or straightforward I-5 corridor driving. Every RVezy host gives you a hands-on orientation at pickup, covering driving, leveling, slide-outs, water, propane, and the dump station, so renting an RV for the first time does not mean figuring it out alone. State Route 504 to the Johnston Ridge area has gentle grades and pullouts perfect for practicing. If you are nervous, choose delivery so the host handles parking, or pick a Class B campervan rental in Castle Rock for car-like handling. Host messaging stays open during your trip for quick questions.
wsdot.wa.gov/travel/highway-conditions/mountain-passesWhat happens if the RV breaks down during my trip?
You are never stranded. Every RVezy booking includes 24/7 roadside assistance as part of the protection plan, so a flat tire on SR-504, a dead battery at Seaquest, or a warning light on I-5 is one phone call away from help. The roadside team coordinates tows, tire changes, jump-starts, lockouts, and fuel delivery anywhere in the Castle Rock area or along your route. Your host is also just a message away through the RVezy app for quick troubleshooting, like resetting a GFCI outlet or relighting a pilot. Save the roadside number to your phone at pickup and screenshot your host's contact info, and you are well prepared.
help.rvezy.com/hc/en-us/articles/34008759079835-RVezy-renter-protection-plans-in-detailWhat are popular road trips from Castle Rock?
An RV road trip from Castle Rock unlocks some of the Pacific Northwest's greatest hits. Top routes include the Mount St. Helens loop via SR-504 toward Johnston Ridge (about 52 miles, half-day), Mount Rainier National Park via US-12 and SR-7 (about 110 miles, around 2.5 hours), the Oregon Coast via Astoria and Cannon Beach (about 90 miles), Portland and the Columbia River Gorge (about 50 miles south on I-5, then east), and Olympic National Park's Hoh Rainforest (around 200 miles via Olympia). Travel into Canada is allowed on many RVezy rentals (confirm with your host first), but trips into Mexico are not covered. A 7-day loop hitting St. Helens, Rainier, and the Gorge is a classic itinerary.
nps.gov/mora/planyourvisit/index.htmHow much should I budget for fuel on a Castle Rock RV trip?
Fuel is easier to budget than you might think. Travel trailers towed by your own vehicle generally drop your tow rig to 10 to 14 mpg, Class B campervans average 18 to 22 mpg, Class C motorhomes get 8 to 12 mpg, and larger Class A rigs run 6 to 9 mpg. Washington gas in the Castle Rock area typically runs a bit cheaper than Seattle or Portland metro prices. For a 4-day loop covering about 300 miles in a Class C, plan on roughly $110 to $160 in fuel. Fill up near I-5 Exit 49 in Castle Rock, which usually offers competitive prices in town.
eia.gov/petroleum/gasdiesel/How far in advance should I book campgrounds near Castle Rock?
Booking early is the move. Seaquest State Park and other Washington State Parks open reservations 9 months in advance through the Washington State Parks reservation system, and summer weekends (mid-June through Labor Day) often fill within hours of opening. For private parks like Toutle River RV Resort and Silver Lake Resort, aim for 2 to 3 months ahead during peak season. Shoulder season (May, late September, October) is much more forgiving and is often bookable a week out. If Seaquest is full, check Cedars RV Park in Castle Rock or Toutle River RV Resort, both reliable backups with full hookups just minutes away.
washington.goingtocamp.com/What are driving conditions like around Castle Rock?
Driving around Castle Rock is genuinely RV-friendly. I-5 runs right through town with easy Exit 49 access, and SR-504 (the Spirit Lake Memorial Highway) is a well-maintained two-lane road with gentle grades, wide shoulders, and plenty of scenic pullouts as it climbs toward the Johnston Ridge area. Watch for elk crossings in the Toutle River valley at dawn and dusk, and check WSDOT for fog on I-5 in fall and winter mornings. From late fall through early spring, the upper stretch of SR-504 past Coldwater Lake may close due to snow, but lower viewpoints generally stay accessible. Download the WSDOT app for real-time road conditions before you leave camp.
wsdot.wa.gov/travel/real-time-travel/travel-alertsWhat amenities do Castle Rock campgrounds offer for RVs?
You will find everything you need close to camp. Most Castle Rock area RV parks, including Toutle River RV Resort and Silver Lake Resort, offer full hookups (30/50 amp electric, water, and sewer), Wi-Fi, hot showers, laundry, and on-site dump stations. Seaquest State Park has utility sites with water and electric plus a centralized dump station near the entrance, and potable water fill stations are clearly marked. Arriving with at least a quarter tank of fresh water is a good idea, since the climb up SR-504 is more enjoyable with full tanks. Confirm hookup type (30 vs 50 amp) with your RVezy host so you can bring the right adapter.
parks.wa.gov/find-parks/state-parks/seaquest-state-parkWhat's included inside the RV I rent in Castle Rock?
You are stepping into a fully equipped home on wheels. A typical motorhome rental in Castle Rock comes with sleeping for 4 to 8 (queen bed, convertible dinette, bunk options), a kitchen with fridge/freezer, microwave, stovetop, sink, and cookware, a bathroom with toilet and shower, climate control via furnace and roof AC, and seatbelts for safe travel. Many listings include a TV, generator (helpful for boondocking near the volcano), solar panels, and outdoor speakers. Wi-Fi via cellular hotspot is common in newer rigs, though cell signal can thin out past Coldwater Lake on SR-504. Check the listing's amenities checklist for the exact inventory, then message the host with any questions before booking.
rvezy.com/rv-search?SearchAddress=Castle%20Rock%2C%20WashingtonWhat add-ons and pickup options should I know about?
Castle Rock hosts make customizing your trip easy. Popular add-ons include linen and kitchen kits, camp chairs and outdoor rugs, generators or extra propane, bike racks, and stargazing gear (a hit near Mount St. Helens dark skies). Many listings offer delivery and setup to Seaquest State Park, Toutle River RV Resort, or your driveway for a flat fee based on distance from Castle Rock. Mileage policies vary by host: most include 100 to 150 free miles per night, and some offer unlimited. Pickup walkthroughs typically take 30 to 45 minutes. Bundle delivery, linens, and chairs so you can show up with just your duffel bag and start the trip relaxed.
rvezy.com/rv-search?SearchAddress=Castle%20Rock%2C%20WashingtonHow does payment and the security deposit work?
Payment is simple and secure. You pay through RVezy at booking with a credit or debit card, and the platform holds funds to protect both you and the host. The security deposit is set by each host (typically a few hundred to a couple thousand dollars for a Castle Rock rental) and is placed as a hold on your card, not a charge, then released after the host confirms the RV came back in good shape. To avoid issues, do a quick walkaround video at pickup and dropoff, follow the mileage and generator-hour limits in the listing, and return the rig with the same fuel and tank levels you left with.
help.rvezy.com/hc/en-us/articles/360038106214-How-the-security-deposit-worksCan I rent an RV in Castle Rock during winter, and is it set up for cold weather?
Yes, winter RV rentals in Castle Rock are available and can be very comfortable. Lowland Castle Rock stays mild (40s by day, low 30s at night) with infrequent snow, so heated tanks are not always required, though many local hosts list four-season rigs with insulated underbellies, heated holding tanks, and reliable propane furnaces, great if you are chasing waterfall hikes along the Cowlitz or storm-watching on the coast. Use shore power at year-round parks like Toutle River RV Resort to keep the heater running without burning through propane. Filter for winterized or four-season rigs and message the host to confirm heated tanks. Off-season rates are often well below summer pricing.
weather.gov/sew/Nearby cities with campgrounds
Seattle, WAPortland, OROlympia, WAEugene, ORPaine Field-Lake Stickney, WACovington, WAGraham, WARiver Road, ORPuyallup, WASandy, ORElk Plain, WAHazel Dell, WATigard, ORMaywood Park, ORBend, ORMilwaukie, ORFife, WASalem, ORHappy Valley, ORTumwater, WAMaple Valley, WACascade-Fairwood, WAAlbany, ORFife Heights, WA