This was 21.3 percent lower than the state average of 42.7 percent. In 2020 the total municipality population reached 2,869.
88.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Galena for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 245 | 11.6 |
| Regular high school diploma | 769 | 36.4 |
| GED or alternative credential | 107 | 5.1 |
| Some college, less than 1 year | 121 | 5.7 |
| Some college, 1 or more years, no degree | 418 | 19.8 |
| Associate's degree | 150 | 7.1 |
| Bachelor's degree | 213 | 10.1 |
| Master's degree | 74 | 3.5 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 16 | 0.8 |
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