This was 23.5 percent lower than the state average of 41.9 percent. In 2020 the total municipality population reached 680.
81.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Gibson for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 78 | 18.1 |
| Regular high school diploma | 147 | 34.2 |
| GED or alternative credential | 42 | 9.8 |
| Some college, less than 1 year | 8 | 1.9 |
| Some college, 1 or more years, no degree | 76 | 17.7 |
| Associate's degree | 34 | 7.9 |
| Bachelor's degree | 22 | 5.1 |
| Master's degree | 18 | 4.2 |
| Professional school degree | 2 | 0.5 |
| Doctorate degree | 3 | 0.7 |
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