This was 3.2 percent higher than the state average of 43.7 percent. In 2020 the total municipality population reached 1,469.
93.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Okawville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 65 | 6.6 |
| Regular high school diploma | 227 | 23 |
| GED or alternative credential | 47 | 4.8 |
| Some college, less than 1 year | 103 | 10.4 |
| Some college, 1 or more years, no degree | 82 | 8.3 |
| Associate's degree | 120 | 12.2 |
| Bachelor's degree | 193 | 19.6 |
| Master's degree | 111 | 11.3 |
| Professional school degree | 36 | 3.7 |
| Doctorate degree | 2 | 0.2 |
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