This was 12.3 percent higher than the state average of 42.7 percent. In 2020 the total municipality population reached 25,665.
95.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in South Portland for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 757 | 4.1 |
| Regular high school diploma | 3,514 | 19.1 |
| GED or alternative credential | 631 | 3.4 |
| Some college, less than 1 year | 925 | 5 |
| Some college, 1 or more years, no degree | 2,441 | 13.3 |
| Associate's degree | 1,738 | 9.5 |
| Bachelor's degree | 5,360 | 29.2 |
| Master's degree | 2,230 | 12.1 |
| Professional school degree | 495 | 2.7 |
| Doctorate degree | 267 | 1.5 |
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