This was 23.8 percent higher than the state average of 46.3 percent. In 2020 the total municipality population reached 23,995.
96.5 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Dix Hills for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 599 | 3.5 |
| Regular high school diploma | 1,999 | 11.6 |
| GED or alternative credential | 131 | 0.8 |
| Some college, less than 1 year | 989 | 5.7 |
| Some college, 1 or more years, no degree | 1,421 | 8.3 |
| Associate's degree | 1,279 | 7.4 |
| Bachelor's degree | 5,086 | 29.6 |
| Master's degree | 3,131 | 18.2 |
| Professional school degree | 1,998 | 11.6 |
| Doctorate degree | 578 | 3.4 |
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