This was 23 percent higher than the state average of 41 percent. In 2020 the total municipality population reached 116.
100 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Orrtanna for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 0 | 0 |
| Regular high school diploma | 7 | 9.3 |
| GED or alternative credential | 0 | 0 |
| Some college, less than 1 year | 15 | 20 |
| Some college, 1 or more years, no degree | 5 | 6.7 |
| Associate's degree | 23 | 30.7 |
| Bachelor's degree | 13 | 17.3 |
| Master's degree | 7 | 9.3 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 5 | 6.7 |
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