This was 6.6 percent higher than the state average of 47.4 percent. In 2020 the total municipality population reached 675.
94.9 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 | 23 | 5.1 |
| Regular high school diploma | 87 | 19.2 |
| GED or alternative credential | 8 | 1.8 |
| Some college, less than 1 year | 18 | 4 |
| Some college, 1 or more years, no degree | 72 | 15.9 |
| Associate's degree | 30 | 6.6 |
| Bachelor's degree | 180 | 39.8 |
| Master's degree | 25 | 5.5 |
| Professional school degree | 8 | 1.8 |
| Doctorate degree | 1 | 0.2 |
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