This was 24.8 percent lower than the state average of 38 percent. In 2020 the total municipality population reached 453.
73.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Essex for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 92 | 26.4 |
| Regular high school diploma | 142 | 40.7 |
| GED or alternative credential | 31 | 8.9 |
| Some college, less than 1 year | 24 | 6.9 |
| Some college, 1 or more years, no degree | 14 | 4 |
| Associate's degree | 28 | 8 |
| Bachelor's degree | 17 | 4.9 |
| Master's degree | 1 | 0.3 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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