This was 6.7 percent lower than the state average of 31.4 percent. In 2020 the total municipality population reached 3,609.
84.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Hahnville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 345 | 15.4 |
| Regular high school diploma | 806 | 35.9 |
| GED or alternative credential | 97 | 4.3 |
| Some college, less than 1 year | 75 | 3.3 |
| Some college, 1 or more years, no degree | 369 | 16.4 |
| Associate's degree | 125 | 5.6 |
| Bachelor's degree | 359 | 16 |
| Master's degree | 62 | 2.8 |
| Professional school degree | 8 | 0.4 |
| Doctorate degree | 0 | 0 |
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