This was 24.2 percent higher than the state average of 43.7 percent. In 2020 the total municipality population reached 5,094.
98.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Lake Barrington for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 52 | 1.3 |
| Regular high school diploma | 431 | 11 |
| GED or alternative credential | 25 | 0.6 |
| Some college, less than 1 year | 344 | 8.8 |
| Some college, 1 or more years, no degree | 405 | 10.3 |
| Associate's degree | 153 | 3.9 |
| Bachelor's degree | 1,504 | 38.4 |
| Master's degree | 725 | 18.5 |
| Professional school degree | 245 | 6.3 |
| Doctorate degree | 35 | 0.9 |
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