This was 14.8 percent lower than the state average of 41.8 percent. In 2020 the total municipality population reached 258.
82 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Sheldon for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 34 | 18 |
| Regular high school diploma | 66 | 34.9 |
| GED or alternative credential | 5 | 2.6 |
| Some college, less than 1 year | 13 | 6.9 |
| Some college, 1 or more years, no degree | 20 | 10.6 |
| Associate's degree | 25 | 13.2 |
| Bachelor's degree | 24 | 12.7 |
| Master's degree | 2 | 1.1 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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