This was 15.1 percent higher than the state average of 48.4 percent. In 2020 the total municipality population reached 1,466.
98.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Tonka Bay for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 16 | 1.4 |
| Regular high school diploma | 182 | 16 |
| GED or alternative credential | 52 | 4.6 |
| Some college, less than 1 year | 20 | 1.8 |
| Some college, 1 or more years, no degree | 145 | 12.8 |
| Associate's degree | 74 | 6.5 |
| Bachelor's degree | 467 | 41.1 |
| Master's degree | 125 | 11 |
| Professional school degree | 34 | 3 |
| Doctorate degree | 22 | 1.9 |
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