This was 13.2 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 3,340.
88.1 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 | 281 | 11.9 |
| Regular high school diploma | 690 | 29.2 |
| GED or alternative credential | 140 | 5.9 |
| Some college, less than 1 year | 181 | 7.7 |
| Some college, 1 or more years, no degree | 351 | 14.9 |
| Associate's degree | 180 | 7.6 |
| Bachelor's degree | 331 | 14 |
| Master's degree | 177 | 7.5 |
| Professional school degree | 15 | 0.6 |
| Doctorate degree | 17 | 0.7 |
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