This was 25 percent lower than the state average of 43.2 percent. In 2020 the total municipality population reached 319.
92.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Polk for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 16 | 7.3 |
| Regular high school diploma | 75 | 34.1 |
| GED or alternative credential | 7 | 3.2 |
| Some college, less than 1 year | 46 | 20.9 |
| Some college, 1 or more years, no degree | 36 | 16.4 |
| Associate's degree | 17 | 7.7 |
| Bachelor's degree | 13 | 5.9 |
| Master's degree | 9 | 4.1 |
| Professional school degree | 1 | 0.5 |
| Doctorate degree | 0 | 0 |
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