Silverlake, WA

ZIP code 98645 covers Ryderwood and surrounding rural areas in southwestern Cowlitz County, Washington. Ryderwood is the area’s principal settlement, known for its retirement-community identity and compact town center. Notable local landmarks include Ryderwood Community Hall, a venue for civic events, and Ryderwood Community Church. Beyond the settlement, the landscape is largely wooded and agricultural, with dispersed homes and farms.