The student population at Mt San Antonio College is 29,971 (all undergraduate). The number of students has increased by 980 (3.38%) over the past decade.
The average student population over the last 11 years is 28,644 where 29,971 students are attending the school for the academic year 2024-2025.
Total enrollment fluctuated between 2016 and 2025, with 6 year-over-year increases and 3 decreases. It peaked at 29,971 students in 2025 and was lowest at 25,540 in 2022. Overall, enrollment rose from 28,991 to 29,971 students, a net gain of 980 (3.4%).
The following table and chart illustrate the changes in student population by gender at Mt San Antonio College since 2015.
| Year | Total | Men | Women |
|---|---|---|---|
| 2015-16 | 28,991 | 14,042 | 14,949 |
| 2016-17 | 29,446 455 | 14,106 64 | 15,340 391 |
| 2017-18 | 29,960 514 | 14,338 232 | 15,622 282 |
| 2018-19 | 29,346 -614 | 13,930 -408 | 15,416 -206 |
| 2019-20 | 29,799 453 | 14,042 112 | 15,757 341 |
| 2020-21 | 28,393 -1,406 | 12,647 -1,395 | 15,746 -11 |
| 2021-22 | 25,540 -2,853 | 11,656 -991 | 13,884 -1,862 |
| 2022-23 | 26,256 716 | 12,327 671 | 13,929 45 |
| 2023-24 | 28,742 2,486 | 13,517 1,190 | 15,225 1,296 |
| 2024-25 | 29,971 1,229 | 14,055 538 | 15,916 691 |
| Average | 28,644 | 13,466 | 15,178 |
The percentage of white students is 8.02% and the percentage of black students is 3.49% at Mt San Antonio College. 17.60% of enrolled students is Asian. Hispanic students comprise 66.28% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 11.25% to 8.02%. Asian enrollment grew from 17.21% to 17.60%. Black student enrollment decreased from 4.10% to 3.49%. Hispanic student representation expanded from 61.63% to 66.28%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.5210 which indicates that somewhat diverse. This decreased from 0.5754 a decade ago, suggesting that racial diversity has declined.
The following table and chart illustrate the student population trends by race/ethnicity at Mt San Antonio College over the past 11 years (2015-2025).
| Year | American Indian or Native American | Asian | Black | Hispanic | Native Hawaiian or Other Pacific Islander | White | Two or More Races |
|---|---|---|---|---|---|---|---|
| 2015-16 | 47 | 4,989 | 1,189 | 17,868 | 86 | 3,261 | 826 |
| 2016-17 | 40 | 5,059 | 1,135 | 18,364 | 99 | 3,135 | 893 |
| 2017-18 | 39 | 5,110 | 1,114 | 19,000 | 84 | 3,096 | 901 |
| 2018-19 | 37 | 5,125 | 1,078 | 18,688 | 74 | 2,889 | 900 |
| 2019-20 | 43 | 5,339 | 1,066 | 19,019 | 75 | 2,812 | 938 |
| 2020-21 | 33 | 5,242 | 1,074 | 17,973 | 65 | 2,663 | 904 |
| 2021-22 | 39 | 4,694 | 912 | 16,409 | 60 | 2,333 | 797 |
| 2022-23 | 30 | 4,875 | 954 | 17,053 | 63 | 2,206 | 829 |
| 2023-24 | 35 | 5,127 | 1,060 | 18,965 | 55 | 2,317 | 893 |
| 2024-25 | 44 | 5,276 | 1,046 | 19,866 | 73 | 2,403 | 946 |
| Average | 39 | 5,084 | 1,063 | 18,321 | 73 | 2,712 | 883 |
7,502 students are enrolled in online degree programs exclusively for the academic year 2024-2025, which is 25% of total students. The number of online students has increased 1,499.57% since 2015. The following table and chart illustrate the changes in the online student population by enrolled type at Mt San Antonio College from 2015 to 2025.
| Year | Total Enrollment | Online Completely | Enrolled in Some Online Courses | Not Enrolled in Online Courses |
|---|---|---|---|---|
| 2015-16 | 28,991 | 469 | 1,721 | 26,801 |
| 2016-17 | 29,446 | 513 | 1,906 | 27,027 |
| 2017-18 | 29,960 | 787 | 2,750 | 26,423 |
| 2018-19 | 29,346 | 1,137 | 3,720 | 24,489 |
| 2019-20 | 29,799 | 1,425 | 4,542 | 23,832 |
| 2020-21 | 28,393 | 5,881 | 13,834 | 8,678 |
| 2021-22 | 25,540 | 398 | 2,219 | 22,923 |
| 2022-23 | 26,256 | 6,419 | 8,245 | 11,592 |
| 2023-24 | 28,742 | 6,796 | 9,494 | 12,452 |
| 2024-25 | 29,971 | 7,502 | 9,780 | 12,689 |
| Average | 28,644 | 3,133 | 5,821 | 19,691 |
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