This was 39 percent higher than the state average of 47.4 percent. In 2020 the total municipality population reached 48,566.
97.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in McLean for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 679 | 2.1 |
| Regular high school diploma | 1,536 | 4.6 |
| GED or alternative credential | 161 | 0.5 |
| Some college, less than 1 year | 507 | 1.5 |
| Some college, 1 or more years, no degree | 1,626 | 4.9 |
| Associate's degree | 1,034 | 3.1 |
| Bachelor's degree | 9,827 | 29.7 |
| Master's degree | 9,887 | 29.9 |
| Professional school degree | 5,208 | 15.7 |
| Doctorate degree | 2,629 | 7.9 |
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