The college's first male students arrived in 1973, making Hughes Hall the first of the all-female colleges to admit men, and from that time students began to study a wider range of affiliated post-graduate degrees. Student numbers gradually increased in the 1980s and 1990s. Today, Hughes Hall has about 500 graduate students and around 90 undergraduates, all students are "mature" (aged over 21), and the college accommodates study in the wide range of studies taught in the university. The college is one of the most international Cambridge colleges, with its students representing over 60 nationalities.