This was 19.7 percent lower than the state average of 48.4 percent. In 2020 the total municipality population reached 432.
86.5 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Kellogg for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 44 | 13.5 |
| Regular high school diploma | 95 | 29.1 |
| GED or alternative credential | 10 | 3.1 |
| Some college, less than 1 year | 24 | 7.3 |
| Some college, 1 or more years, no degree | 60 | 18.3 |
| Associate's degree | 50 | 15.3 |
| Bachelor's degree | 31 | 9.5 |
| Master's degree | 13 | 4 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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