This was 9.6 percent lower than the state average of 31.4 percent. In 2020 the total municipality population reached 458.
71.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Clayton for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 92 | 28.7 |
| Regular high school diploma | 97 | 30.2 |
| GED or alternative credential | 8 | 2.5 |
| Some college, less than 1 year | 3 | 0.9 |
| Some college, 1 or more years, no degree | 51 | 15.9 |
| Associate's degree | 53 | 16.5 |
| Bachelor's degree | 12 | 3.7 |
| Master's degree | 5 | 1.6 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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