This was 2.8 percent higher than the state average of 47.4 percent. In 2020 the total municipality population reached 18,313.
87.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Harrison for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,696 | 12.9 |
| Regular high school diploma | 3,202 | 24.3 |
| GED or alternative credential | 291 | 2.2 |
| Some college, less than 1 year | 507 | 3.8 |
| Some college, 1 or more years, no degree | 866 | 6.6 |
| Associate's degree | 881 | 6.7 |
| Bachelor's degree | 2,807 | 21.3 |
| Master's degree | 2,401 | 18.2 |
| Professional school degree | 287 | 2.2 |
| Doctorate degree | 240 | 1.8 |
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