Join the Sierra Club!

Join the Sierra Club! Every membership helps us rescue irreplaceable wildlands, save endangered and threatened wildlife, improve urban spaces and protect the Earth's fragile environment. You can be sure that your voice will be heard through congressional lobbying and grassroots action on the environmental issues that matter most to you.

Membership and Donations:

To join the Sierra Club, simply complete a secure Online Application Form. To donate, renew, or start a monthly gift, please click here. If you need assistance, please contact membership at or call 415-977-5500. 


People are our power. Across Illinois, our volunteers lead the charge to protect our wild spaces, precious waters, and communities. Join us on a beach clean up, rally, or many of our other volunteering opportunities!