For fall 2016, 118 of 619 entering transfer students at Cornell came from community colleges:
https://admissions.cornell.edu/sites/admissions.cornell.edu/files/Transfer%20Guide%202016%202017.pdf
Stanford historically admits a substantial percentage of transfers from community colleges (64% for fall 2016), but its total number of transfer students is typically only a few dozen per year (39 total for fall 2016, and probably many of them with non-traditional backgrounds):
http://news.stanford.edu/2016/09/19/new-undergraduate-students/