According to the 2000 National Jewish Population Survey (NJPS), 21% of American Jews report that they keep kosher in the home. This includes the vast majority of people who identify themselves as
Orthodox, as well as many
Conservative and
Reconstructionist Jews and some
Reform Jews.
Part of that 21% keeps kosher at home, but eat non-kosher food out of the home to one degree or another. Some will eat cooked food in a restaurant or a non-kosher home, as long as the meal is either vegetarian or uses only kosher meat and no dairy products. Some will eat non-kosher meat in restaurants, but only if the meat comes from a kosher animal and is not served with dairy products. Some will go... dare I say? ... whole hog and eat bacon cheeseburgers out of the home while keeping a strictly kosher household.