This was 20.5 percent lower than the state average of 40.2 percent. In 2020 the total municipality population reached 1,159.
77.7 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 | 171 | 22.3 |
| Regular high school diploma | 235 | 30.7 |
| GED or alternative credential | 26 | 3.4 |
| Some college, less than 1 year | 29 | 3.8 |
| Some college, 1 or more years, no degree | 154 | 20.1 |
| Associate's degree | 26 | 3.4 |
| Bachelor's degree | 52 | 6.8 |
| Master's degree | 68 | 8.9 |
| Professional school degree | 5 | 0.7 |
| Doctorate degree | 0 | 0 |
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