This was 8.3 percent lower than the state average of 40.5 percent. In 2020 the total municipality population reached 3,814.
91.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Umatilla for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 273 | 8.4 |
| Regular high school diploma | 709 | 21.8 |
| GED or alternative credential | 189 | 5.8 |
| Some college, less than 1 year | 405 | 12.5 |
| Some college, 1 or more years, no degree | 626 | 19.3 |
| Associate's degree | 381 | 11.7 |
| Bachelor's degree | 452 | 13.9 |
| Master's degree | 195 | 6 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 20 | 0.6 |
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