This was 20.6 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 1,154.
88.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Astoria for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 80 | 11.1 |
| Regular high school diploma | 288 | 40 |
| GED or alternative credential | 39 | 5.4 |
| Some college, less than 1 year | 58 | 8.1 |
| Some college, 1 or more years, no degree | 89 | 12.4 |
| Associate's degree | 95 | 13.2 |
| Bachelor's degree | 55 | 7.6 |
| Master's degree | 13 | 1.8 |
| Professional school degree | 3 | 0.4 |
| Doctorate degree | 0 | 0 |
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