This was 7.2 percent lower than the state average of 31.4 percent. In 2020 the total municipality population reached 305.
97 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Dubberly for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 7 | 3 |
| Regular high school diploma | 105 | 44.5 |
| GED or alternative credential | 12 | 5.1 |
| Some college, less than 1 year | 20 | 8.5 |
| Some college, 1 or more years, no degree | 35 | 14.8 |
| Associate's degree | 28 | 11.9 |
| Bachelor's degree | 11 | 4.7 |
| Master's degree | 18 | 7.6 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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