If you look at the interdisciplinary studies majors, and make some reasonable assumptions about which are likely to be popular, it looks likely that over 60% of Stanford undergrads are in STEM or STEM-focused majors. Over 40% of Stanford students are from California. It’s a tippy-top university, but it’s a different world from Harvard (and not just because of the weather). Choose accordingly, if you’re fortunate enough to have the choice.