Castle Rock, WA

ZIP code 98611 encompasses the small town of Castle Rock in Washington. This area is known for its picturesque views of the Cowlitz River and nearby hiking trails in the surrounding forests. One of the most prominent landmarks in the area is Castle Rock itself, an imposing volcanic plug that provides a striking backdrop to the town. Additionally, visitors can explore Mount St. Helens and the Mount St. Helens Visitor Center nearby.