This was 17.6 percent lower than the state average of 43.2 percent. In 2020 the total municipality population reached 356.
94.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Cook for 2020*
| Degree | Number of people | Percentage of population | 
|---|---|---|
| No degree | 13 | 5.9 | 
| Regular high school diploma | 89 | 40.6 | 
| GED or alternative credential | 24 | 11 | 
| Some college, less than 1 year | 8 | 3.7 | 
| Some college, 1 or more years, no degree | 29 | 13.2 | 
| Associate's degree | 15 | 6.8 | 
| Bachelor's degree | 36 | 16.4 | 
| Master's degree | 4 | 1.8 | 
| Professional school degree | 1 | 0.5 | 
| Doctorate degree | 0 | 0 | 

 
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