This was 11 percent lower than the state average of 38.9 percent. In 2020 the total municipality population reached 413.
83.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Alcolu for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 36 | 16.4 |
| Regular high school diploma | 56 | 25.6 |
| GED or alternative credential | 0 | 0 |
| Some college, less than 1 year | 9 | 4.1 |
| Some college, 1 or more years, no degree | 57 | 26 |
| Associate's degree | 4 | 1.8 |
| Bachelor's degree | 18 | 8.2 |
| Master's degree | 33 | 15.1 |
| Professional school degree | 6 | 2.7 |
| Doctorate degree | 0 | 0 |
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