Largest Study of Non-religious Americans - U.S. Secular Survey

The U.S. Secular Survey will be the largest and most comprehensive data collection project about atheists and nonreligious people ever conducted. If you live in the United States and are an atheist, agnostic, humanist, freethinker, skeptic, or identify as secular or nonreligious, we invite you to participate.
https://www.secularsurvey.org/