This was 16.1 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 672.
96.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Grafton for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 17 | 3.2 |
| Regular high school diploma | 208 | 38.8 |
| GED or alternative credential | 27 | 5 |
| Some college, less than 1 year | 10 | 1.9 |
| Some college, 1 or more years, no degree | 126 | 23.5 |
| Associate's degree | 25 | 4.7 |
| Bachelor's degree | 61 | 11.4 |
| Master's degree | 46 | 8.6 |
| Professional school degree | 6 | 1.1 |
| Doctorate degree | 10 | 1.9 |
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