ACLU Membership

Becoming a new ACLU member or renewing your membership.

All membership contributions are processed by the ACLU national office. By joining the ACLU, you will be part of the national ACLU, the Northern California affiliate, and your local chapter.

Join the ACLU online by clicking here.

Prefer to mail your annual membership? Fill out this form and mail it to:

ACLU Membership Department
125 Broad Street, 18th Floor
New York, NY 10004

Already a member? Renew your membership here.

Monthly donors (our Guardians of Liberty) enable us to respond to urgent threats to our civil liberties — ensuring that no challenge goes unanswered.

Visit this page to become a Guardian of Liberty.

If you’re already a monthly donor, but would like to change your credit card on file or your monthly commitment, use this online form.

Note: By completing the form online, your new credit card will be charged today and you will not be charged again this month. If you’ve already made your monthly commitment, call our secure Guardians of Liberty line at (212) 549-2543 with your updated information. Please provide your member ID (if you know it), your full name, and mailing address.

To cancel your monthly donation, call (212) 549-2543 or send an email to with your member ID (if you know it), your full name, and mailing address.

If you need assistance or have any questions, please contact us at or (415) 621-2493.