The American Humanist Association is based in Washington D.C. and includes state chapters. The AHA definition of humanism encompasses a variety of nontheistic views including atheism, agnosticism, rationalism, naturalism and secularism.

The Secular Coalition for America was founded in 2005 as the “only organization in the nation whose primary purpose is lobbying Congress on behalf of atheists, humanists, freethinkers, and other nontheistic Americans.” The SCA is endorsed and supported by numerous secularist groups.

The Institution for the Secularization of Islamic Society is a web-based group that aims to promote an “Islamic Enlightenment”.

The Council for Secular Humanism is considered one of the leading free-thought groups. Based in Amherst, N.Y., the CSH is an umbrella for a range of other organizations. They include the Committee for Skeptical Inquiry, which includes The Skeptical Inquirer magazine, and a publishing house, Prometheus books. “Camp Inquiry” is a summer camp sponsored by the Center for Inquiry, which is […]

Southern California InFocus bills itself as the largest Muslim newspaper in California, with a self-reported circulation of 25,000. It is based in Anaheim, Calif.

The Muslim Observer is an online publication created in Detroit. Aslam Abdullah is editor.

MeccaOne Media produces radio, television, Web content, recordings and other forms of media designed to give voice to American Muslims. It is based in San Jose, Calif.

IslamiCity bills itself as “a global Muslim eCommunity” and offers everything from news and opinion to ecards and matrimonial services on its site. It is based in Los Angeles and owned by Human Assistance and Development International, a nonprofit organization. Mohammed Aleem is its CEO.

For statistics, see the Center for Applied Research in the Apostolate at Georgetown, the nonprofit research organization that conducts social scientific studies for the Catholic Church.