This was 28.7 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 211.
83.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Arlington for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 26 | 16.2 |
| Regular high school diploma | 57 | 35.6 |
| GED or alternative credential | 16 | 10 |
| Some college, less than 1 year | 5 | 3.1 |
| Some college, 1 or more years, no degree | 32 | 20 |
| Associate's degree | 8 | 5 |
| Bachelor's degree | 6 | 3.8 |
| Master's degree | 8 | 5 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 2 | 1.2 |
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