This was 21.8 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 745.
92.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Shannon for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 38 | 7.2 |
| Regular high school diploma | 179 | 33.8 |
| GED or alternative credential | 35 | 6.6 |
| Some college, less than 1 year | 76 | 14.3 |
| Some college, 1 or more years, no degree | 86 | 16.2 |
| Associate's degree | 45 | 8.5 |
| Bachelor's degree | 35 | 6.6 |
| Master's degree | 34 | 6.4 |
| Professional school degree | 2 | 0.4 |
| Doctorate degree | 0 | 0 |
Alerts Sign-up