This was 22.9 percent higher than the state average of 47.7 percent. In 2020 the total municipality population reached 710.
95.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Washington Grove for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 22 | 4.2 |
| Regular high school diploma | 37 | 7.1 |
| GED or alternative credential | 33 | 6.3 |
| Some college, less than 1 year | 30 | 5.7 |
| Some college, 1 or more years, no degree | 32 | 6.1 |
| Associate's degree | 16 | 3.1 |
| Bachelor's degree | 151 | 28.9 |
| Master's degree | 115 | 22 |
| Professional school degree | 18 | 3.4 |
| Doctorate degree | 69 | 13.2 |
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