Minnesota Atheists
Promoting atheism as a positive element in society. Minneapolis based with newsletter, events listing and links.
http://www.mnatheists.org/

Montana Freethinkers
A site for Montanans (and others) to learn and share atheist, humanist, and other free thought views.
http://www.mtfreethinkers.org/

United States Atheists
Atheist community center based in Portland, Oregon.
http://www.unitedstatesatheists.com/

Massachusetts American Atheists
Provides a protesting guide, a list of famous atheists, and a message board.
http://www.angelfire.com/ma3/massatheist/

Freethought Feminist
Based in Sacramento, with links and some collected articles. Member of the Internet Infidels group.
http://www.rthoughtsrfree.org/feminist.htm

Sacramento Freethought
Local organisations, authors, ceremonies, quiz, and FAQ. (United States)
http://www.rthoughtsrfree.org/

Idaho Atheists
Features events, issues, secular alternatives to religious groups and ceremonies, and humour. In USA.
http://www.idahoatheists.org/

Atheists and Freethinkers of Denver
Resource site for atheists and freethinkers in the Denver/Boulder, Colorado area. Includes listing of events, a legislation watch, news, and a book section.
http://www.geocities.com/athofden/

Freethinkers of Upstate New York (FUNY)
Regional atheist, agnostic, and humanist organization in upstate New York.
http://www.funygroup.org/

FreeThought Society of Wisconsin
List of meetings, calendar of events, upcoming projects, and contact information.
http://www.freethoughtsocietyofwisconsin.org/

Community of Reason
Non-profit organization for humanists and other atheists in the Kansas City area.
http://www.communityofreason.net/

Brights - New York
New York chapter of the Brights.
http://humanists.net/wasm/BrightsNY.html

Rationalist Society of St. Louis
Contains the history of the group, lists of articles, and links.
http://freethought.mbdojo.com/

San Francisco Atheists
Friendship and activism in the Bay Area.
http://www.sfatheists.com/

Atheists United
Freethought organization working to promote positive atheism through education. Newsletter, calendar of events, forum, and how to join. Los Angeles, California, United States.
http://www.atheistsunited.org/

Camp Quest
Residential summer camp for the children of atheists, freethinkers, secular humanists, and humanists. Pictures, list of activities, and registration forms.
http://camp-quest.com/

East Bay Atheists
Informal groups of residents who each meet once a month to discuss atheism and religiously topical events in the area and around the world. News, meeting schedule, and contact information. Bay Area, California.
http://www.eastbayatheists.org/

Fellowship of Reason
Rational, moral community based on reason. Group's history, frequently asked questions, bylaws, calendar of events, and how to join. Atlanta, Georgia.
http://www.fellowshipofreason.com/

Atheists of Silicon Valley
Atheist organization promoting religion-free lives and the U.S. Constitutional right of freedom from religion. News, information on upcoming events, and links.
http://www.godlessgeeks.com/

Military Association of Atheists and Freethinkers
Grassroots organization that exists to provide a forum for United States service members to express their views and find a community of like-minded individuals. Articles, news, how to become a member, and frequently asked questions.
http://www.maaf.info/

Freethinkers Association of Central Texas
Not-for-profit educational organization, providing fellowship and a forum for critical discussion and debate on any topic of importance for humankind.
http://www.freethinkersact.org/

Corpus Christi Atheists
South Texas. Includes information about activities, and resources for the modern atheist.
http://www.ccatheists.com/

American Atheists
Organisation working for the civil rights of atheists, promoting separation of state and church, and providing information about atheism. Includes essays and articles, and links to related local and international organisations.
http://www.atheists.org/