From Pew Research:
American Jews overwhelmingly say they are proud to be Jewish and have a strong sense of belonging to the Jewish people, according to a major new survey by the Pew Research Center. But the survey also suggests that Jewish identity is changing in America, where one-in-five Jews (22%) now describe themselves as having no religion.
The percentage of U.S. adults who say they are Jewish when asked about their religion has declined by about half since the late 1950s and currently is a little less than 2%. Meanwhile, the number of Americans with direct Jewish ancestry or upbringing who consider themselves Jewish, yet describe themselves as atheist, agnostic or having no particular religion, appears to be rising and is now about 0.5% of the U.S. adult population.1
The changing nature of Jewish identity stands out sharply when the survey’s results are analyzed by generation.