This was 5.3 percent lower than the state average of 46.3 percent. In 2020 the total municipality population reached 13,580.
89.3 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Olean for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 976 | 10.7 |
| Regular high school diploma | 2,268 | 24.9 |
| GED or alternative credential | 737 | 8.1 |
| Some college, less than 1 year | 583 | 6.4 |
| Some college, 1 or more years, no degree | 817 | 9 |
| Associate's degree | 1,385 | 15.2 |
| Bachelor's degree | 1,116 | 12.2 |
| Master's degree | 946 | 10.4 |
| Professional school degree | 112 | 1.2 |
| Doctorate degree | 177 | 1.9 |
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