This was 15.2 percent lower than the state average of 37 percent. In 2020 the total municipality population reached 522.
73.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Rio Lucio for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 94 | 26.9 |
| Regular high school diploma | 84 | 24.1 |
| GED or alternative credential | 10 | 2.9 |
| Some college, less than 1 year | 3 | 0.9 |
| Some college, 1 or more years, no degree | 82 | 23.5 |
| Associate's degree | 52 | 14.9 |
| Bachelor's degree | 18 | 5.2 |
| Master's degree | 5 | 1.4 |
| Professional school degree | 1 | 0.3 |
| Doctorate degree | 0 | 0 |
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