This was 25 percent lower than the state average of 43.2 percent. In 2020 the total municipality population reached 597.
79.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Alda for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 77 | 20.9 |
| Regular high school diploma | 143 | 38.9 |
| GED or alternative credential | 11 | 3 |
| Some college, less than 1 year | 48 | 13 |
| Some college, 1 or more years, no degree | 22 | 6 |
| Associate's degree | 40 | 10.9 |
| Bachelor's degree | 20 | 5.4 |
| Master's degree | 5 | 1.4 |
| Professional school degree | 2 | 0.5 |
| Doctorate degree | 0 | 0 |
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