This was 17.7 percent lower than the state average of 38 percent. In 2020 the total municipality population reached 367.
92.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Summersville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 17 | 7.4 |
| Regular high school diploma | 69 | 29.9 |
| GED or alternative credential | 11 | 4.8 |
| Some college, less than 1 year | 13 | 5.6 |
| Some college, 1 or more years, no degree | 74 | 32 |
| Associate's degree | 10 | 4.3 |
| Bachelor's degree | 22 | 9.5 |
| Master's degree | 12 | 5.2 |
| Professional school degree | 3 | 1.3 |
| Doctorate degree | 0 | 0 |
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