This was 10.7 percent lower than the state average of 38.1 percent. In 2020 the total municipality population reached 265.
86.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Eureka for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 28 | 13.2 |
| Regular high school diploma | 62 | 29.2 |
| GED or alternative credential | 11 | 5.2 |
| Some college, less than 1 year | 12 | 5.7 |
| Some college, 1 or more years, no degree | 41 | 19.3 |
| Associate's degree | 25 | 11.8 |
| Bachelor's degree | 22 | 10.4 |
| Master's degree | 10 | 4.7 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 1 | 0.5 |
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