This was 10.1 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 3,955.
96.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Wonder Lake for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 94 | 3.7 |
| Regular high school diploma | 904 | 35.2 |
| GED or alternative credential | 96 | 3.7 |
| Some college, less than 1 year | 230 | 8.9 |
| Some college, 1 or more years, no degree | 383 | 14.9 |
| Associate's degree | 319 | 12.4 |
| Bachelor's degree | 452 | 17.6 |
| Master's degree | 68 | 2.6 |
| Professional school degree | 14 | 0.5 |
| Doctorate degree | 11 | 0.4 |
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