This was 16.6 percent lower than the state average of 41 percent. In 2020 the total municipality population reached 596.
88.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Heidlersburg for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 52 | 11.9 |
| Regular high school diploma | 157 | 35.8 |
| GED or alternative credential | 23 | 5.3 |
| Some college, less than 1 year | 40 | 9.1 |
| Some college, 1 or more years, no degree | 59 | 13.5 |
| Associate's degree | 50 | 11.4 |
| Bachelor's degree | 29 | 6.6 |
| Master's degree | 28 | 6.4 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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