The Redwood Chapter of the Sierra Club is a geographically vast region composed of six local groups and encompassing all or part of nine counties in Northwest California.
Lake Group Mendocino Group Napa Group
Solano Group Sonoma Group
North Group (Del Norte, Humboldt, Trinity and Western Siskiyou Counties)
Although the geography and environmental challenges vary, we share one of the most remarkable regions in the United States and are committed to amplifying the power of our 11,000+ members and supporters to defend everyone’s right to a healthy world. We're proud to be a part of the most enduring and influential grassroots environmental organization in the United States.
Solano Group Sonoma Group
North Group (Del Norte, Humboldt, Trinity and Western Siskiyou Counties)
Although the geography and environmental challenges vary, we share one of the most remarkable regions in the United States and are committed to amplifying the power of our 11,000+ members and supporters to defend everyone’s right to a healthy world. We're proud to be a part of the most enduring and influential grassroots environmental organization in the United States.
Mailing Address: P.O. Box 466, Santa Rosa, CA 95402 Phone: (707) 544-7651 Call for hours.