This was 7.5 percent higher than the state average of 46.3 percent. In 2020 the total municipality population reached 7,064.
91.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Hewlett for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 418 | 8.1 |
| Regular high school diploma | 1,048 | 20.2 |
| GED or alternative credential | 178 | 3.4 |
| Some college, less than 1 year | 208 | 4 |
| Some college, 1 or more years, no degree | 542 | 10.5 |
| Associate's degree | 190 | 3.7 |
| Bachelor's degree | 1,653 | 31.9 |
| Master's degree | 474 | 9.2 |
| Professional school degree | 351 | 6.8 |
| Doctorate degree | 117 | 2.3 |
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