Membership Information

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One hundred years ago, the Sierra Club was formed and worked to preserve Yosemite for generations to come. Since then we've helped protect millions of acres of wilderness, thousands of miles of wild and scenic rivers, and many areas of critical ecological importance. These environmental gains have resulted through the financial support and efforts of the Sierra Club's many members.

The Sierra Club's track record and diverse following has made the Club the largest grassroots environmental organization in the United States. The Sierra Club works to protect the environment at all levels - federal, state, and local - and encourages the exploration, enjoyment, and protection of the natural areas of the Earth.

Membership benefits include: helping to protect wilderness and natural areas; a one-year (lifetime for Life memberships) subscription to our bi-monthly, national Sierra magazine; membership at the National, Chapter (Illinois), and Group levels; voting privileges in Sierra Club elections; trip fee reductions on many River Prairie Group outings; and access to members-only national and international wilderness trips, hikes, and other activities.

To join the Sierra Club, please click on the link below; then select one of the membership options and get a free thank you gift (if you wish). Or you can join on some of our outings (ask the leader) or at a general meeting. Contact Joe Pokorny at for more information.

Join the Sierra Club (or renew your membership)