This was 0.1 percent lower than the state average of 47.4 percent. In 2020 the total municipality population reached 11,814.
90.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Manchester for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 727 | 9.3 |
| Regular high school diploma | 1,540 | 19.6 |
| GED or alternative credential | 200 | 2.6 |
| Some college, less than 1 year | 556 | 7.1 |
| Some college, 1 or more years, no degree | 1,110 | 14.2 |
| Associate's degree | 1,009 | 12.9 |
| Bachelor's degree | 1,898 | 24.2 |
| Master's degree | 708 | 9 |
| Professional school degree | 27 | 0.3 |
| Doctorate degree | 67 | 0.9 |
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