This was 12 percent lower than the state average of 36 percent. In 2020 the total municipality population reached 10,029.
76.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Plymouth for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,495 | 23.2 |
| Regular high school diploma | 1,974 | 30.6 |
| GED or alternative credential | 446 | 6.9 |
| Some college, less than 1 year | 405 | 6.3 |
| Some college, 1 or more years, no degree | 582 | 9 |
| Associate's degree | 438 | 6.8 |
| Bachelor's degree | 669 | 10.4 |
| Master's degree | 333 | 5.2 |
| Professional school degree | 92 | 1.4 |
| Doctorate degree | 20 | 0.3 |
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