This was 28 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 2,529.
74.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Preston Heights for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 430 | 25.4 |
| Regular high school diploma | 488 | 28.8 |
| GED or alternative credential | 151 | 8.9 |
| Some college, less than 1 year | 135 | 8 |
| Some college, 1 or more years, no degree | 225 | 13.3 |
| Associate's degree | 82 | 4.8 |
| Bachelor's degree | 133 | 7.8 |
| Master's degree | 19 | 1.1 |
| Professional school degree | 16 | 0.9 |
| Doctorate degree | 16 | 0.9 |
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