This was 21.1 percent lower than the state average of 37.7 percent. In 2020 the total municipality population reached 2,646.
86.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in West Portsmouth for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 267 | 13.4 |
| Regular high school diploma | 924 | 46.3 |
| GED or alternative credential | 200 | 10 |
| Some college, less than 1 year | 127 | 6.4 |
| Some college, 1 or more years, no degree | 147 | 7.4 |
| Associate's degree | 166 | 8.3 |
| Bachelor's degree | 94 | 4.7 |
| Master's degree | 51 | 2.6 |
| Professional school degree | 20 | 1 |
| Doctorate degree | 0 | 0 |
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