This was 14.8 percent lower than the state average of 40.2 percent. In 2020 the total municipality population reached 1,837.
77.2 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 | 306 | 22.8 |
| Regular high school diploma | 395 | 29.5 |
| GED or alternative credential | 130 | 9.7 |
| Some college, less than 1 year | 23 | 1.7 |
| Some college, 1 or more years, no degree | 145 | 10.8 |
| Associate's degree | 46 | 3.4 |
| Bachelor's degree | 199 | 14.9 |
| Master's degree | 53 | 4 |
| Professional school degree | 26 | 1.9 |
| Doctorate degree | 17 | 1.3 |
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