This was 18.9 percent lower than the state average of 36 percent. In 2020 the total municipality population reached 291.
96.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Millhousen for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 7 | 3.1 |
| Regular high school diploma | 145 | 63.6 |
| GED or alternative credential | 7 | 3.1 |
| Some college, less than 1 year | 14 | 6.1 |
| Some college, 1 or more years, no degree | 16 | 7 |
| Associate's degree | 29 | 12.7 |
| Bachelor's degree | 3 | 1.3 |
| Master's degree | 7 | 3.1 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |

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