This was 20.6 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 12,235.
77.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Northlake for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,862 | 22.9 |
| Regular high school diploma | 2,193 | 26.9 |
| GED or alternative credential | 461 | 5.7 |
| Some college, less than 1 year | 645 | 7.9 |
| Some college, 1 or more years, no degree | 1,102 | 13.5 |
| Associate's degree | 716 | 8.8 |
| Bachelor's degree | 926 | 11.4 |
| Master's degree | 145 | 1.8 |
| Professional school degree | 87 | 1.1 |
| Doctorate degree | 6 | less than 0.1 |
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