This was 29.3 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 610.
85.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Olive Branch for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 61 | 14.1 |
| Regular high school diploma | 191 | 44.2 |
| GED or alternative credential | 7 | 1.6 |
| Some college, less than 1 year | 45 | 10.4 |
| Some college, 1 or more years, no degree | 66 | 15.3 |
| Associate's degree | 36 | 8.3 |
| Bachelor's degree | 9 | 2.1 |
| Master's degree | 5 | 1.2 |
| Professional school degree | 12 | 2.8 |
| Doctorate degree | 0 | 0 |
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