CampgroundsDB

Seaquest State Park

Its 88 sites are reservable through Washington State Parks reservations, camping costs Peak nightly (statewide): standard $31-$43, partial hookup $41-$51, full hookup $46-$56, and it is open year-round. Seaquest State Park is a State Park campground near Castle Rock, Washington.

Reservable: Washington State Parks reservations

State Park · Castle Rock, Washington

Seaquest State ParkSeaquest State Park
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Seaquest State Park. Photo: Steven Pavlov, CC BY-SA 4.0

Managed by
State Park
Hookups
Full hookups
Max RV length
50 ft

Seaquest State Park sits inside Seaquest State Park. Its hours, entrance fee, and boundary are on publiclandsdb.com.

Getting a site

Managed by
State Park
Reservations
Washington State Parks reservations Book a site
Fee
Peak nightly (statewide): standard $31-$43, partial hookup $41-$51, full hookup $46-$56
Entrance fee
None for campers in the park they stay in; Discover Pass $10/day or $45/year for day visits
Booking window
Up to nine months before the first night; same-day campsite bookings until 2 p.m.
Cancellations
$8 online or $10 by phone, plus 5% to 50% of cancelled nights depending on how long the reservation was held; no-shows get no refund

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

Sites and hookups

Total sites
88
RV sites
33
Hookups
Full hookups
Max RV length
50 ft
  • ✓ Toilets
  • ✓ Potable water
  • ✓ Showers
  • ✓ Dump station
  • ✓ Fire rings
  • ✓ Pets allowed

On site: Toilets, potable water, showers, dump station, fire rings, and pets allowed.

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.
Generators
Allowed outside quiet hours
Pets
Allowed

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

Access and cell service

Elevation
575 ft

Cell coverage by carrier (FCC map)

AT&T
No coverage at the campground; 4G LTE mapped about 0.2 mi away
T-Mobile
No coverage mapped
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.

46.2981, -122.8214 in Cowlitz. Open in OpenStreetMap. Map © OpenStreetMap contributors.

Open in Google Maps Directions

Season and winter services

Seaquest State Park is open year-round . In winter: water on, 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 Seaquest State Park?
Sites at Seaquest State Park are reserved through Washington State Parks reservations (https://washington.goingtocamp.com/). Booking window: Up to nine months before the first night; same-day campsite bookings until 2 p.m.
How much does it cost to camp at Seaquest State Park?
Camping at Seaquest State Park costs Peak nightly (statewide): standard $31-$43, partial hookup $41-$51, full hookup $46-$56.
Is there a separate entrance fee at Seaquest State Park?
No, there is no separate entrance fee at Seaquest State Park; only the camping fee applies.
What happens if I cancel or don't show up at Seaquest State Park?
$8 online or $10 by phone, plus 5% to 50% of cancelled nights depending on how long the reservation was held; no-shows get no refund.
How many campsites does Seaquest State Park have?
Seaquest State Park has 88 campsites, including 33 RV sites.
Does Seaquest State Park have RV hookups?
Yes. Seaquest State Park has full hookups. 33 sites take RVs, the longest rig allowed is 50 feet, and there is a dump station.
Is there drinking water at Seaquest State Park?
Yes, Seaquest State Park has potable water. It also has toilets and showers.
Are dogs allowed at Seaquest State Park?
Yes, pets are allowed at Seaquest State Park.
When is Seaquest State Park open?
Seaquest State Park is open year-round.
Is Seaquest State Park open in winter?
Yes, Seaquest State Park is open year-round; in winter the water stays on.
How long can you stay at Seaquest State Park?
The stay limit at Seaquest State Park is 10 nights in one park within a 30-day period; 90 nights per calendar year in all state parks.
Are generators allowed at Seaquest State Park?
Yes, outside quiet hours (10 p.m. to 6:30 a.m.).
Is there cell service at Seaquest State Park?
Yes, outdoors: the FCC's National Broadband Map (data as of December 31, 2025) shows 4G LTE from Verizon at Seaquest State Park. It shows none at Seaquest State Park from AT&T, though AT&T shows 4G LTE about 0.2 mi away. It shows none from T-Mobile at or within about half a mile. 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 Seaquest State Park?
Seaquest State Park is managed by the state park system.

Around Seaquest State Park

fishypedia.com · 9.4 miles

The nearest lake with a fishing page is South Lewis County Park Pond, whose mapped center point is 9.4 miles away in a straight line. Stocking record and species: South Lewis County Park Pond fishing on fishypedia.com.

Not on record Harry Gardner Park Toutle · County Season Not on record Fee $25/night RV site, $20 tent site; $5 dump fee for RVs not staying

More campgrounds: camping near Castle Rock and campgrounds in Cowlitz.

Sources

Photo credits

Reservable: Washington State Parks reservations Peak nightly (statewide): standard $31-$43, partial hookup $41-$51, full hookup $46-$56
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