This was 5.1 percent higher than the state average of 52.2 percent. In 2020 the total municipality population reached 1,183.
93.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Granby for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 56 | 6.3 |
| Regular high school diploma | 241 | 27.1 |
| GED or alternative credential | 17 | 1.9 |
| Some college, less than 1 year | 0 | 0 |
| Some college, 1 or more years, no degree | 65 | 7.3 |
| Associate's degree | 65 | 7.3 |
| Bachelor's degree | 243 | 27.4 |
| Master's degree | 181 | 20.4 |
| Professional school degree | 20 | 2.3 |
| Doctorate degree | 0 | 0 |
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