Michael Safyan's answer to Do most atheist Jews eat pork?

Rabbi's grandson, attended Jewish day school, family spans denominations · Author has 6.3K answers and 8M answer views · Updated 4y ·

No. Although many Jews who are Reform, unaffiliated, or otherwise identify as secular may not keep kashrut, the Jewish dietary laws, completely (and may eat meat that has not been slaughtered in a kosher manner or may mix milk and meat), since pork is a very obvious non-kosher food, even among those who are otherwise fairly secular, there may still be some avoidance of this food.

According to the 2016 survey of Israeli Jews by Pew Research:

Overall, relatively few Israeli Jews (16%) say they eat pork. An overwhelming majority (82%) do not consume bacon or other pork products, which are not kosher. Even a solid majority of Hilonim (67%) say they refrain from consuming pork.

(Emphasis mine). Note that Hilonim refers to secular Jews in Israel. Eating non-kosher food may be more common among secular Jews in the US, especially given that kosher food is more difficult to come by and there is greater peer pressure to eat non-kosher foods arising from living among non-Jewish peers. That being said, it is my understanding that a similar trend applies in the US, with eating overtly non-kosher foods like pork still being avoided to a certain extent even by those who otherwise do not adhere to many other kosher laws.