This was 0.7 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 55,432.
89 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Oak Lawn for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 4,361 | 11 |
| Regular high school diploma | 8,780 | 22.2 |
| GED or alternative credential | 1,181 | 3 |
| Some college, less than 1 year | 2,099 | 5.3 |
| Some college, 1 or more years, no degree | 6,115 | 15.5 |
| Associate's degree | 3,776 | 9.6 |
| Bachelor's degree | 8,912 | 22.5 |
| Master's degree | 3,267 | 8.3 |
| Professional school degree | 734 | 1.9 |
| Doctorate degree | 301 | 0.8 |
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