This was 12.9 percent higher than the state average of 37.7 percent. In 2020 the total municipality population reached 253.
95.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Nellie for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 7 | 4.3 |
| Regular high school diploma | 42 | 25.9 |
| GED or alternative credential | 1 | 0.6 |
| Some college, less than 1 year | 7 | 4.3 |
| Some college, 1 or more years, no degree | 23 | 14.2 |
| Associate's degree | 7 | 4.3 |
| Bachelor's degree | 22 | 13.6 |
| Master's degree | 53 | 32.7 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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