The Sierra Club is the most enduring and influential grassroots environmental organization in the United States. We amplify the power of our 3.8 million members and supporters to defend everyone’s right to a healthy world.


Today, there are serious challenges ahead: a warming climate, unprecedented levels of pollution, and powerful special interests undermining basic protections. There’s no time to waste in coming together for new solutions—which is why the Sierra Club is bringing people together to build the most powerful and effective environmental movement the world has ever seen.



Founded in 1972, The Connecticut Chapter of the Sierra Club is the state-level branch of the organization, and currently has more than 40,000 members and supporters. To learn more about our upcoming goals, check out our Strategic Plan!

Our goals are to:

  • Solve the climate crisis primarily through a successful transition to a resource-efficient clean energy economy that better serves people and nature;

  • Secure protections for public lands and waters, promote healthy ecosystems and communities, and fight for clean air and water;


  • Expand opportunities for more people to explore, enjoy, and protect the planet by supporting programs and policies that reach across economic, cultural, and community lines to get people outdoors; and


  • Build a diverse, inclusive environmental movement that reflects and represents today’s American public, and prioritizes important connections between environmental health and social justice.