This was 43.9 percent higher than the state average of 35.7 percent. In 2020 the total municipality population reached 42,700.
98.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Brentwood for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 444 | 1.6 |
| Regular high school diploma | 1,745 | 6.5 |
| GED or alternative credential | 254 | 0.9 |
| Some college, less than 1 year | 787 | 2.9 |
| Some college, 1 or more years, no degree | 2,292 | 8.5 |
| Associate's degree | 959 | 3.5 |
| Bachelor's degree | 11,798 | 43.6 |
| Master's degree | 5,881 | 21.8 |
| Professional school degree | 1,786 | 6.6 |
| Doctorate degree | 1,087 | 4 |
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