This was 0.2 percent higher than the state average of 41.8 percent. In 2020 the total municipality population reached 672.
92.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Merrimac for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 35 | 7.7 |
| Regular high school diploma | 95 | 20.8 |
| GED or alternative credential | 8 | 1.8 |
| Some college, less than 1 year | 42 | 9.2 |
| Some college, 1 or more years, no degree | 85 | 18.6 |
| Associate's degree | 58 | 12.7 |
| Bachelor's degree | 88 | 19.3 |
| Master's degree | 39 | 8.5 |
| Professional school degree | 2 | 0.4 |
| Doctorate degree | 5 | 1.1 |
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