This was 18.1 percent lower than the state average of 41.9 percent. In 2020 the total municipality population reached 270.
96.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Colerain for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 7 | 3.9 |
| Regular high school diploma | 61 | 33.7 |
| GED or alternative credential | 9 | 5 |
| Some college, less than 1 year | 2 | 1.1 |
| Some college, 1 or more years, no degree | 59 | 32.6 |
| Associate's degree | 12 | 6.6 |
| Bachelor's degree | 22 | 12.2 |
| Master's degree | 7 | 3.9 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 2 | 1.1 |
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