This was 12.5 percent higher than the state average of 44.7 percent. In 2020 the total municipality population reached 543.
98.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Holden for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 4 | 1.3 |
| Regular high school diploma | 30 | 9.9 |
| GED or alternative credential | 4 | 1.3 |
| Some college, less than 1 year | 18 | 5.9 |
| Some college, 1 or more years, no degree | 74 | 24.3 |
| Associate's degree | 31 | 10.2 |
| Bachelor's degree | 119 | 39.1 |
| Master's degree | 18 | 5.9 |
| Professional school degree | 1 | 0.3 |
| Doctorate degree | 5 | 1.6 |
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