This was 18.5 percent lower than the state average of 41.9 percent. In 2020 the total municipality population reached 397.
86.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Arapahoe for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 43 | 13.8 |
| Regular high school diploma | 111 | 35.6 |
| GED or alternative credential | 22 | 7.1 |
| Some college, less than 1 year | 7 | 2.2 |
| Some college, 1 or more years, no degree | 56 | 17.9 |
| Associate's degree | 47 | 15.1 |
| Bachelor's degree | 15 | 4.8 |
| Master's degree | 5 | 1.6 |
| Professional school degree | 3 | 1 |
| Doctorate degree | 3 | 1 |
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