Pew Research Center: 2023-24 Religious Landscape Study

This is a large scale demographic survey fielded among more than thirty five thousand American adults in 2023 and 2024, releasing a public, state by state breakdown of religious composition that a reader can check directly online rather than take on the atlas's word. Its margins of error vary by state and are recorded with each individual state's own figure rather than claimed uniformly here, and it does not cover American Samoa, the Northern Mariana Islands or the U.S. Virgin Islands. That the survey publishes its own margins and its own coverage gaps is real methodological transparency, not an appeal to the research center's reputation. Use it for the single largest reported religious affiliation group in each American state as of this study; it is a snapshot of self-reported affiliation, not a claim about belief or practice.