This was 13.5 percent lower than the state average of 31.3 percent. In 2020 the total municipality population reached 163.
91.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Oil Trough town for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 9 | 8.9 |
| Regular high school diploma | 34 | 33.7 |
| GED or alternative credential | 12 | 11.9 |
| Some college, less than 1 year | 10 | 9.9 |
| Some college, 1 or more years, no degree | 18 | 17.8 |
| Associate's degree | 5 | 5 |
| Bachelor's degree | 7 | 6.9 |
| Master's degree | 3 | 3 |
| Professional school degree | 3 | 3 |
| Doctorate degree | 0 | 0 |
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