This was 18.2 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 12,622.
83.5 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Kewanee for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,399 | 16.5 |
| Regular high school diploma | 2,758 | 32.5 |
| GED or alternative credential | 473 | 5.6 |
| Some college, less than 1 year | 585 | 6.9 |
| Some college, 1 or more years, no degree | 1,112 | 13.1 |
| Associate's degree | 914 | 10.8 |
| Bachelor's degree | 853 | 10 |
| Master's degree | 312 | 3.7 |
| Professional school degree | 48 | 0.6 |
| Doctorate degree | 34 | 0.4 |

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