This was 2.6 percent lower than the state average of 46.8 percent. In 2020 the total municipality population reached 3,411.
93 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Three Lakes for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 183 | 7 |
| Regular high school diploma | 434 | 16.6 |
| GED or alternative credential | 102 | 3.9 |
| Some college, less than 1 year | 187 | 7.2 |
| Some college, 1 or more years, no degree | 550 | 21.1 |
| Associate's degree | 284 | 10.9 |
| Bachelor's degree | 629 | 24.1 |
| Master's degree | 221 | 8.5 |
| Professional school degree | 10 | 0.4 |
| Doctorate degree | 8 | 0.3 |
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