This was 9.6 percent lower than the state average of 28.9 percent. In 2020 the total municipality population reached 786.
85.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in McConnell for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 78 | 14.9 |
| Regular high school diploma | 168 | 32.2 |
| GED or alternative credential | 37 | 7.1 |
| Some college, less than 1 year | 35 | 6.7 |
| Some college, 1 or more years, no degree | 103 | 19.7 |
| Associate's degree | 52 | 10 |
| Bachelor's degree | 8 | 1.5 |
| Master's degree | 7 | 1.3 |
| Professional school degree | 34 | 6.5 |
| Doctorate degree | 0 | 0 |
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