This was 13.6 percent lower than the state average of 44.8 percent. In 2020 the total municipality population reached 263.
80.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Gackle for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 37 | 19.6 |
| Regular high school diploma | 45 | 23.8 |
| GED or alternative credential | 7 | 3.7 |
| Some college, less than 1 year | 21 | 11.1 |
| Some college, 1 or more years, no degree | 20 | 10.6 |
| Associate's degree | 17 | 9 |
| Bachelor's degree | 28 | 14.8 |
| Master's degree | 13 | 6.9 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 1 | 0.5 |
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