This was 5.8 percent lower than the state average of 33.6 percent. In 2020 the total municipality population reached 421.
88.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Grand Rivers for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 38 | 11.4 |
| Regular high school diploma | 115 | 34.4 |
| GED or alternative credential | 13 | 3.9 |
| Some college, less than 1 year | 27 | 8.1 |
| Some college, 1 or more years, no degree | 48 | 14.4 |
| Associate's degree | 22 | 6.6 |
| Bachelor's degree | 38 | 11.4 |
| Master's degree | 17 | 5.1 |
| Professional school degree | 9 | 2.7 |
| Doctorate degree | 7 | 2.1 |
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