This was 15.2 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 4,149.
87.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Anna for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 356 | 12.1 |
| Regular high school diploma | 765 | 26 |
| GED or alternative credential | 204 | 6.9 |
| Some college, less than 1 year | 415 | 14.1 |
| Some college, 1 or more years, no degree | 363 | 12.3 |
| Associate's degree | 166 | 5.6 |
| Bachelor's degree | 476 | 16.2 |
| Master's degree | 158 | 5.4 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 37 | 1.3 |
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