This was 7.9 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 8,872.
90.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Olney for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 579 | 9.6 |
| Regular high school diploma | 1,475 | 24.5 |
| GED or alternative credential | 340 | 5.6 |
| Some college, less than 1 year | 570 | 9.5 |
| Some college, 1 or more years, no degree | 902 | 15 |
| Associate's degree | 976 | 16.2 |
| Bachelor's degree | 783 | 13 |
| Master's degree | 348 | 5.8 |
| Professional school degree | 31 | 0.5 |
| Doctorate degree | 20 | 0.3 |

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