This was 1.9 percent higher than the state average of 43.7 percent. In 2020 the total municipality population reached 22,744.
93.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Roselle for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,087 | 6.9 |
| Regular high school diploma | 3,543 | 22.4 |
| GED or alternative credential | 485 | 3.1 |
| Some college, less than 1 year | 1,149 | 7.3 |
| Some college, 1 or more years, no degree | 2,338 | 14.8 |
| Associate's degree | 1,018 | 6.4 |
| Bachelor's degree | 4,105 | 25.9 |
| Master's degree | 1,647 | 10.4 |
| Professional school degree | 282 | 1.8 |
| Doctorate degree | 168 | 1.1 |
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