This was 12.7 percent lower than the state average of 42.7 percent. In 2020 the total municipality population reached 4,897.
87.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Houlton for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 431 | 12.7 |
| Regular high school diploma | 1,071 | 31.5 |
| GED or alternative credential | 190 | 5.6 |
| Some college, less than 1 year | 203 | 6 |
| Some college, 1 or more years, no degree | 482 | 14.2 |
| Associate's degree | 328 | 9.7 |
| Bachelor's degree | 406 | 12 |
| Master's degree | 244 | 7.2 |
| Professional school degree | 35 | 1 |
| Doctorate degree | 5 | 0.1 |
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