To clarify, I graduated in 2013 from Hopkins, I’m no longer an undergraduate.
According to US News 46.7% of undergraduates received some level of financial aid and 99.4% of that need was fully met by JHU for an average grant of $34,462 (http://colleges.usnews.rankingsandreviews.com/best-colleges/jhu-2077/paying).
No, this is not the best financial aid program of the top ranked schools, but Hopkins does more than a decent job in my opinion. I didn’t qualify for financial aid (I didn’t apply), but I had many friends who were on partial need-based scholarships and two who were on full-ride scholarships (also need-based).