This was 22.8 percent lower than the state average of 40.2 percent. In 2020 the total municipality population reached 1,425.
68.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Lumber for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 292 | 31.2 |
| Regular high school diploma | 416 | 44.5 |
| GED or alternative credential | 37 | 4 |
| Some college, less than 1 year | 19 | 2 |
| Some college, 1 or more years, no degree | 8 | 0.9 |
| Associate's degree | 119 | 12.7 |
| Bachelor's degree | 27 | 2.9 |
| Master's degree | 4 | 0.4 |
| Professional school degree | 13 | 1.4 |
| Doctorate degree | 0 | 0 |
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