This was 20.8 percent lower than the state average of 39.6 percent. In 2020 the total municipality population reached 441.
96.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Hanover for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 10 | 3.6 |
| Regular high school diploma | 119 | 43.1 |
| GED or alternative credential | 8 | 2.9 |
| Some college, less than 1 year | 28 | 10.1 |
| Some college, 1 or more years, no degree | 59 | 21.4 |
| Associate's degree | 28 | 10.1 |
| Bachelor's degree | 18 | 6.5 |
| Master's degree | 5 | 1.8 |
| Professional school degree | 1 | 0.4 |
| Doctorate degree | 0 | 0 |
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