Irreligion in the United States
In the United States, between 6% and 11% of the population demonstrated nonreligious attitudes and naturalistic worldviews, namely atheists or agnostics. Other given answers are: "Nothing in particular", "Agnostics", "Christians", "Jewish", "Buddhists", "Other religions" and "Don't know/Refused".
Source: Wikipedia — Irreligion in the United States (CC BY-SA 4.0)