This was 14.7 percent lower than the state average of 41.1 percent. In 2020 the total municipality population reached 182.
79.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Green Mountain for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 26 | 20.2 |
| Regular high school diploma | 36 | 27.9 |
| GED or alternative credential | 19 | 14.7 |
| Some college, less than 1 year | 7 | 5.4 |
| Some college, 1 or more years, no degree | 7 | 5.4 |
| Associate's degree | 20 | 15.5 |
| Bachelor's degree | 12 | 9.3 |
| Master's degree | 0 | 0 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 2 | 1.6 |
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