This was 15.2 percent higher than the state average of 47.4 percent. In 2020 the total municipality population reached 23,820.
91.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Chantilly for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,289 | 8.2 |
| Regular high school diploma | 2,444 | 15.6 |
| GED or alternative credential | 226 | 1.4 |
| Some college, less than 1 year | 759 | 4.8 |
| Some college, 1 or more years, no degree | 1,167 | 7.4 |
| Associate's degree | 979 | 6.2 |
| Bachelor's degree | 4,540 | 28.9 |
| Master's degree | 3,550 | 22.6 |
| Professional school degree | 464 | 3 |
| Doctorate degree | 297 | 1.9 |
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