This was 7.9 percent lower than the state average of 28.9 percent. In 2020 the total municipality population reached 752.
89.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Peterstown for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 53 | 10.8 |
| Regular high school diploma | 183 | 37.3 |
| GED or alternative credential | 62 | 12.7 |
| Some college, less than 1 year | 42 | 8.6 |
| Some college, 1 or more years, no degree | 47 | 9.6 |
| Associate's degree | 39 | 8 |
| Bachelor's degree | 36 | 7.3 |
| Master's degree | 20 | 4.1 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 8 | 1.6 |
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