The ICU Graduate School had 150 students, with 64 men and 86 women. 90.5% of ICU's undergraduate and graduate students are Japanese citizens, and the remainder represent 44 countries. Many returnee Japanese students that have lived overseas, also known as kikokushijo (帰国子女), make up the student body.[17] The majority of ICU students live off-campus, either at home with their families or in apartments.