Surveys indicate that a growing number of young people in the United States identify as trans and especially as nonbinary. Further, there is evidence that an increasing number of young adults use nongendered or nonbinary pronouns for themselves (e.g. ‘they/them’). However, research to date has not captured the full range of ways that young adults label their gender identities, the specific pronouns they go by, and the intersections between their gender identities and pronoun choices. This study examines the gender identities and pronouns of the more than 2.4 million students who applied to college in Fall 2022 or Fall 2023 using the Common Application, the admissions platform utilized by more than 1,000 U.S. colleges and universities. We consider how students identified their gender in general and by legal sex, race, and citizenship status, and what pronouns they used by these same demographic factors. Our research finds major differences in students’ gender identities and pronoun use by legal sex and citizenship status and fewer significant differences by race. We conclude by making recommendations for college administrators, faculty, and staff on how they can better understand gender diversity and support trans and nonbinary students.