This was 3.4 percent higher than the state average of 39.6 percent. In 2020 the total municipality population reached 29,446.
92.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Oak Park for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,566 | 7.6 |
| Regular high school diploma | 3,839 | 18.5 |
| GED or alternative credential | 543 | 2.6 |
| Some college, less than 1 year | 1,232 | 5.9 |
| Some college, 1 or more years, no degree | 4,632 | 22.4 |
| Associate's degree | 1,988 | 9.6 |
| Bachelor's degree | 4,626 | 22.3 |
| Master's degree | 1,839 | 8.9 |
| Professional school degree | 350 | 1.7 |
| Doctorate degree | 107 | 0.5 |
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