This was 8.5 percent lower than the state average of 37.7 percent. In 2020 the total municipality population reached 21,668.
91.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Chillicothe for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,336 | 8.7 |
| Regular high school diploma | 5,362 | 34.7 |
| GED or alternative credential | 756 | 4.9 |
| Some college, less than 1 year | 1,128 | 7.3 |
| Some college, 1 or more years, no degree | 2,355 | 15.3 |
| Associate's degree | 1,385 | 9 |
| Bachelor's degree | 1,745 | 11.3 |
| Master's degree | 991 | 6.4 |
| Professional school degree | 229 | 1.5 |
| Doctorate degree | 152 | 1 |
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