This was 21.1 percent lower than the state average of 48.4 percent. In 2020 the total municipality population reached 631.
92.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Glenville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 35 | 7.3 |
| Regular high school diploma | 209 | 43.8 |
| GED or alternative credential | 13 | 2.7 |
| Some college, less than 1 year | 37 | 7.8 |
| Some college, 1 or more years, no degree | 53 | 11.1 |
| Associate's degree | 82 | 17.2 |
| Bachelor's degree | 43 | 9 |
| Master's degree | 3 | 0.6 |
| Professional school degree | 2 | 0.4 |
| Doctorate degree | 0 | 0 |
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