Jewish essentials: For most American Jews, ancestry and culture matter more than religion

What does it mean to be Jewish? There are few more fundamental and difficult questions for Jews — indeed, figuring out one’s place within Judaism’s 3,000+ years of tradition, 620 commandments (plus a library’s worth of commentary), worldwide diaspora and multiple religious movements is itself key to many Jews’ self-identity.

Jews tend to be less religious than the U.S. public as a whole, with fewer saying they attend religious services weekly, believe in God with absolute certainty, or that religion is very important in their lives. The Pew Research Center’s landmark new survey of American Jews found that overall, about six-in-ten (62%) say being Jewish is mainly a matter of ancestry and/or culture, while just 15% say it’s mainly a matter of religion. (The rest cited some combination of religion, ancestry and/or culture.)
Those views varied considerably by religious movement, or lack thereof: While fully two-thirds of Reform Jews (and 80% of Jews who didn’t identify with any movement) say being Jewish is mainly a matter of ancestry and/or culture, only 15% of Orthodox Jews do. Nearly half (46%) of Orthodox Jews say being Jewish is mainly a matter of religion, while more than a third (38%) cite religion in combination with ancestry and/or culture. (In general, Orthodox Jews are the strictest about observing traditional Jewish law and Reform Jews are the least strict, with Conservative Jews in between.)