This was 5.4 percent lower than the state average of 34.4 percent. In 2020 the total municipality population reached 607.
85.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Red Oak for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 59 | 14.9 |
| Regular high school diploma | 119 | 30.1 |
| GED or alternative credential | 27 | 6.8 |
| Some college, less than 1 year | 30 | 7.6 |
| Some college, 1 or more years, no degree | 46 | 11.6 |
| Associate's degree | 52 | 13.1 |
| Bachelor's degree | 38 | 9.6 |
| Master's degree | 25 | 6.3 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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