| Race/Ethnicity | Number | Percent |
|---|---|---|
| White | 3,238 | 65.31% |
| International | 594 | 11.98% |
| Hispanic | 329 | 6.64% |
| Asian | 317 | 6.39% |
| Black or African American | 168 | 3.39% |
| Multi-Ethnic | 154 | 3.11% |
| Unknown | 145 | 2.92% |
| American Indian or Alaska Native | 11 | 0.22% |
| Native Hawaiian or Pacific Islander | 2 | 0.04% |
The majority of Iowa graduate students are White.