This was 3.2 percent higher than the state average of 48.4 percent. In 2020 the total municipality population reached 33,019.
96.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Andover for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 795 | 3.6 |
| Regular high school diploma | 4,043 | 18.5 |
| GED or alternative credential | 353 | 1.6 |
| Some college, less than 1 year | 1,686 | 7.7 |
| Some college, 1 or more years, no degree | 3,689 | 16.9 |
| Associate's degree | 3,308 | 15.2 |
| Bachelor's degree | 5,546 | 25.4 |
| Master's degree | 1,755 | 8 |
| Professional school degree | 499 | 2.3 |
| Doctorate degree | 155 | 0.7 |
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