This was 8 percent higher than the state average of 43.7 percent. In 2020 the total municipality population reached 13,137.
89.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Warrenville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 945 | 10.3 |
| Regular high school diploma | 1,239 | 13.5 |
| GED or alternative credential | 299 | 3.3 |
| Some college, less than 1 year | 637 | 7 |
| Some college, 1 or more years, no degree | 1,294 | 14.1 |
| Associate's degree | 726 | 7.9 |
| Bachelor's degree | 2,757 | 30.1 |
| Master's degree | 982 | 10.7 |
| Professional school degree | 134 | 1.5 |
| Doctorate degree | 134 | 1.5 |
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