This was 6.6 percent lower than the state average of 40.5 percent. In 2020 the total municipality population reached 1,488.
89.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Keystone Heights for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 100 | 10.1 |
| Regular high school diploma | 208 | 21 |
| GED or alternative credential | 38 | 3.8 |
| Some college, less than 1 year | 105 | 10.6 |
| Some college, 1 or more years, no degree | 203 | 20.5 |
| Associate's degree | 96 | 9.7 |
| Bachelor's degree | 175 | 17.7 |
| Master's degree | 51 | 5.2 |
| Professional school degree | 11 | 1.1 |
| Doctorate degree | 3 | 0.3 |
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