This was 15.3 percent lower than the state average of 43.2 percent. In 2020 the total municipality population reached 923.
91.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Walthill for 2020*
| Degree | Number of people | Percentage of population | 
|---|---|---|
| No degree | 39 | 8.8 | 
| Regular high school diploma | 110 | 24.9 | 
| GED or alternative credential | 27 | 6.1 | 
| Some college, less than 1 year | 38 | 8.6 | 
| Some college, 1 or more years, no degree | 104 | 23.6 | 
| Associate's degree | 64 | 14.5 | 
| Bachelor's degree | 39 | 8.8 | 
| Master's degree | 19 | 4.3 | 
| Professional school degree | 0 | 0 | 
| Doctorate degree | 1 | 0.2 | 

 
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