This was 11 percent lower than the state average of 42.7 percent. In 2020 the total municipality population reached 7,389.
88.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Lake Mathews CDP for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 560 | 11.4 |
| Regular high school diploma | 1,291 | 26.2 |
| GED or alternative credential | 266 | 5.4 |
| Some college, less than 1 year | 390 | 7.9 |
| Some college, 1 or more years, no degree | 852 | 17.3 |
| Associate's degree | 407 | 8.3 |
| Bachelor's degree | 733 | 14.9 |
| Master's degree | 275 | 5.6 |
| Professional school degree | 92 | 1.9 |
| Doctorate degree | 55 | 1.1 |
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