This was 4.9 percent lower than the state average of 31.3 percent. In 2020 the total municipality population reached 198.
85.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Adona city for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 21 | 14.2 |
| Regular high school diploma | 53 | 35.8 |
| GED or alternative credential | 13 | 8.8 |
| Some college, less than 1 year | 8 | 5.4 |
| Some college, 1 or more years, no degree | 14 | 9.5 |
| Associate's degree | 29 | 19.6 |
| Bachelor's degree | 9 | 6.1 |
| Master's degree | 1 | 0.7 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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