This was 21.1 percent higher than the state average of 33.6 percent. In 2020 the total municipality population reached 2,120.
97.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Orchard Grass Hills for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 26 | 2.2 |
| Regular high school diploma | 157 | 13.1 |
| GED or alternative credential | 13 | 1.1 |
| Some college, less than 1 year | 126 | 10.5 |
| Some college, 1 or more years, no degree | 222 | 18.5 |
| Associate's degree | 135 | 11.2 |
| Bachelor's degree | 349 | 29.1 |
| Master's degree | 129 | 10.7 |
| Professional school degree | 32 | 2.7 |
| Doctorate degree | 12 | 1 |
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