This was 9.7 percent higher than the state average of 48.4 percent. In 2020 the total municipality population reached 528.
97.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Gem Lake for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 10 | 2.8 |
| Regular high school diploma | 76 | 21.1 |
| GED or alternative credential | 8 | 2.2 |
| Some college, less than 1 year | 17 | 4.7 |
| Some college, 1 or more years, no degree | 40 | 11.1 |
| Associate's degree | 64 | 17.8 |
| Bachelor's degree | 84 | 23.3 |
| Master's degree | 33 | 9.2 |
| Professional school degree | 11 | 3.1 |
| Doctorate degree | 17 | 4.7 |
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