This was 28.2 percent higher than the state average of 33.6 percent. In 2020 the total municipality population reached 589.
98.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in River Bluff for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 5 | 1.3 |
| Regular high school diploma | 49 | 12.4 |
| GED or alternative credential | 6 | 1.5 |
| Some college, less than 1 year | 13 | 3.3 |
| Some college, 1 or more years, no degree | 78 | 19.7 |
| Associate's degree | 15 | 3.8 |
| Bachelor's degree | 165 | 41.8 |
| Master's degree | 31 | 7.8 |
| Professional school degree | 23 | 5.8 |
| Doctorate degree | 10 | 2.5 |
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