This was 22.3 percent lower than the state average of 35.7 percent. In 2020 the total municipality population reached 298.
84.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Milledgeville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 32 | 15.9 |
| Regular high school diploma | 71 | 35.3 |
| GED or alternative credential | 8 | 4 |
| Some college, less than 1 year | 20 | 10 |
| Some college, 1 or more years, no degree | 43 | 21.4 |
| Associate's degree | 23 | 11.4 |
| Bachelor's degree | 2 | 1 |
| Master's degree | 1 | 0.5 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 1 | 0.5 |
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