This was 27.9 percent lower than the state average of 48.4 percent. In 2020 the total municipality population reached 224.
93.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Greenwald for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 10 | 6.8 |
| Regular high school diploma | 80 | 54.8 |
| GED or alternative credential | 5 | 3.4 |
| Some college, less than 1 year | 10 | 6.8 |
| Some college, 1 or more years, no degree | 11 | 7.5 |
| Associate's degree | 20 | 13.7 |
| Bachelor's degree | 7 | 4.8 |
| Master's degree | 1 | 0.7 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 2 | 1.4 |
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