The following are some interesting finding from the 2013 Pew study,
"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 changing nature of Jewish identity stands out sharply when the survey’s results are analyzed by generation. Fully 93% of Jews in the aging Greatest Generation identify as Jewish on the basis of religion (called “Jews by religion” in this report); just 7% describe themselves as having no religion (“Jews of no religion”). By contrast, among Jews in the youngest generation of U.S. adults – the Millennials – 68% identify as Jews by religion, while 32% describe themselves as having no religion and identify as Jewish on the basis of ancestry, ethnicity or culture."
Intermarriage, by Year of Marriage:
Intermarriage is a related phenomenon. It is much more common among secular Jews in the survey than among Jews by religion: 79% of married Jews of no religion have a spouse who is not Jewish, compared with 36% among Jews by religion. And intermarried Jews, like Jews of no religion, are much less likely to be raising their children in the Jewish faith. Nearly all Jews who have a Jewish spouse say they are raising their children as Jewish by religion (96%). Among Jews with a non-Jewish spouse, however, 20% say they are raising their children Jewish by religion, and 25% are raising their children partly Jewish by religion. Roughly one-third (37%) of intermarried Jews who are raising children say they are not raising those children Jewish at all.
Moreover, intermarriage rates seem to have risen substantially over the last five decades. Among Jewish respondents who have gotten married since 2000, nearly six-in-ten have a non-Jewish spouse. Among those who got married in the 1980s, roughly four-in-ten have a non-Jewish spouse. And among Jews who got married before 1970, just 17% have a non-Jewish spouse.3
What does being Jewish mean in America today?
A key aim of the Pew Research Center survey is to explore Jewish identity: What does being Jewish mean in America today? Large majorities of U.S. Jews say that remembering the Holocaust (73%) and leading an ethical life (69%) are essential to their sense of Jewishness. More than half (56%) say that working for justice and equality is essential to what being Jewish means to them. And about four-in-ten say that caring about Israel (43%) and having a good sense of humor (42%) are essential to their Jewish identity.
What is compatible with being Jewish?
Can a person be Jewish if they work on Shabbat, are critical of Israel, do not believe in God, or believe in Jesus as the Messiah?
But observing religious law is not as central to most American Jews. Just 19% of the Jewish adults surveyed say observing Jewish law (halakha) is essential to what being Jewish means to them. And in a separate but related question, most Jews say a person can be Jewish even if that person works on the Sabbath or does not believe in God. Believing in Jesus, however, is enough to place one beyond the pale: 60% of U.S. Jews say a person cannot be Jewish if he or she believes Jesus was the Messiah.
By several conventional measures, Jews tend to be less religious than the U.S. public as a whole. Compared with the overall population, for example, Jews are less likely to say that they attend religious services weekly or that they believe in God with absolute certainty. And just 26% of U.S. Jews say religion is very important in their lives, compared with 56% of the general public. (Orthodox Jews are a clear exception in this regard, exhibiting levels of religious commitment that place them among the most religiously committed groups in the country.) But while relatively few Jews attach high importance to religion, far more (46%) say being Jewish is very important to them.