New Extended City Hall Hours!

Effective January 2, 2024:
7:30 AM – 5:00 PM, Monday through Thursday
Closed Friday, Saturday, Sunday
Closed holidays

Cowlitz River Bridge Project

For information on the Washington State Department of Transportation’s SR 411 Cowlitz River Bridge – Replace Bridge Deck Project, please visit

Castle Rock: Where Past, Present and Future Come Together

  • Castle Rock City Hall and coffee shop
  • Castle Rock Bike Skills Park
  • Award-winning flower baskets
  • Castle Rock flower baskets
  • Castle Rock Building Supply
  • Castle Rock downtown Cowlitz
  • Castle Rock Huntington and Cowlitz
  • Castle Rock Park 2015
  • Castle Rock downtown 2015
  • Castle Rock Post Office 2015
  • Sky 2015
  • Front Avenue
  • Castle Rock City Hall building 2014
  • Castle Rock Connies
  • Castle Rock downtown baskets
  • Storytelling Photography building 2015

Castle Rock is a wonderful place to live, work and play. It’s a community where the people are as resilient and vibrant as the natural features that surround their home; a place where life-long residents and visitors alike feel they are part of the same tight-knit family. Read more about our Vision for Castle Rock.

Castle Rock, the Gateway to Mount St. Helens, is situated between the Cowlitz River and Interstate 5, located 134 miles south of Seattle and 63 miles north of Portland, Oregon. (Link to map of Castle Rock.) It is the northern most city in Cowlitz County, with a population of 2,120. Spirit Lake Memorial Highway (State Route 504) connects the city to the Mount St. Helens National Monument and Spirit Lake recreation areas – two of the most outstanding tourist attractions in Washington State. The City of Castle Rock received the Association of Washington Cities 2004 Municipal Achievement Gold Medal Award in recognition of the Riverfront Trail Project. Link to our parks department for more information on community parks.

Castle Rock’s historic downtown features a wide variety of shops, antique stores, restaurants, and accommodations.

The town’s namesake, a 190-foot-high rock, was a landmark for Cowlitz Indians and Hudson’s Bay Company traders as early as 1832. Castle Rock prospered as a Cowlitz River steamboat port and trading center for valley farms. A local sawmill was the first to produce cedar shingles, using the Western red cedar, which grows in abundance in the region.

Landing on the Cowlitz Development

Contact Us

Mail: P.O. Box 370
Castle Rock, WA  98611
City Hall: 141 A Street SW
Castle Rock, WA  98611
Phone: (360) 274-8181