Castle Rock, WA

View of Castle Rock, WA
Population
2,442
U.S. Census Population Estimates Program · 2025
Elevation
56 ft
USGS GNIS community points and 3DEP elevation · GNIS 2026-07-06; USGS 3DEP sampled 2026-07-23
Median Home Value
$348,600
U.S. Census American Community Survey 5-Year · 2024
Median Rent
$1,222/mo
U.S. Census American Community Survey 5-Year · 2024
Median Income
$69,639
U.S. Census American Community Survey 5-Year · 2024
General Quality
Overall rating out of 100

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About Castle Rock

Castle Rock is a quiet, scenic small town tucked along the Cowlitz River in southwest Washington, right off Interstate 5. Best known as the western gateway to Mount St. Helens, the community of roughly 2,500 people sits beneath the towering volcanic outcrop that gave the town its name. Living here means having great outdoor recreation close to home, with Spirit Lake Memorial Highway leading straight up to camping, fishing at Silver Lake, and trails through the national volcanic monument.

Everyday life revolves around local schools, neighborhood shops, and community spots like the Cowlitz Riverfront Trail and bike skills park. Castle Rock offers a peaceful, close-knit environment, while neighboring Longview and Kelso are only fifteen minutes away for major healthcare, shopping, and job centers. With I-5 right at the edge of town, residents also enjoy an easy drive south to Portland or north toward Olympia and Seattle.

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