This was 4.3 percent lower than the state average of 28.9 percent. In 2020 the total municipality population reached 5,740.
86.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Princeton for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 567 | 13.9 |
| Regular high school diploma | 1,330 | 32.6 |
| GED or alternative credential | 261 | 6.4 |
| Some college, less than 1 year | 239 | 5.9 |
| Some college, 1 or more years, no degree | 681 | 16.7 |
| Associate's degree | 247 | 6.1 |
| Bachelor's degree | 542 | 13.3 |
| Master's degree | 181 | 4.4 |
| Professional school degree | 5 | 0.1 |
| Doctorate degree | 29 | 0.7 |
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