This was 24.4 percent lower than the state average of 39.6 percent. In 2020 the total municipality population reached 2,567.
77.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Shelby for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 319 | 22.4 |
| Regular high school diploma | 439 | 30.8 |
| GED or alternative credential | 106 | 7.4 |
| Some college, less than 1 year | 83 | 5.8 |
| Some college, 1 or more years, no degree | 260 | 18.3 |
| Associate's degree | 56 | 3.9 |
| Bachelor's degree | 122 | 8.6 |
| Master's degree | 36 | 2.5 |
| Professional school degree | 3 | 0.2 |
| Doctorate degree | 0 | 0 |
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