Silver Lake, sometimes Silverlake, is an unincorporated community in Cowlitz County, Washington, in the southwestern portion of the state.

Local economic growth has remained stable due to outdoor activities that take place in the scenic Silverlake area, including camping, hunting, and fishing.

Silverlake is served by one major road, Spirit Lake Memorial Highway, which joins I-5 in Castle Rock to the west and runs east to the US Forest Services’ Mount Saint Helens Observatory at Johnston Ridge.

This highway is a two-directional arterial heading west and east with both residential and commercial development areas running alongside it.

Cowlitz County provides most services including police, fire, ambulance, water, sewer, and garbage.