This was 12.6 percent lower than the state average of 39.6 percent. In 2020 the total municipality population reached 633.
91.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Addison for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 33 | 8.2 |
| Regular high school diploma | 162 | 40.5 |
| GED or alternative credential | 8 | 2 |
| Some college, less than 1 year | 32 | 8 |
| Some college, 1 or more years, no degree | 57 | 14.2 |
| Associate's degree | 54 | 13.5 |
| Bachelor's degree | 37 | 9.2 |
| Master's degree | 15 | 3.8 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 2 | 0.5 |
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