| Race/Ethnicity | Number |
|---|---|
| White | 2,265 |
| Hispanic | 1,042 |
| Black or African American | 280 |
| Multi-Ethnic | 138 |
| Asian | 108 |
| Unknown | 64 |
| American Indian or Alaska Native | 10 |
| International | 6 |
| Native Hawaiian or Pacific Islander | 2 |
The majority of Joliet Junior College undergraduates are White.