This was 2.7 percent higher than the state average of 39.6 percent. In 2020 the total municipality population reached 1,676.
96 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Lake Isabella for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 51 | 4 |
| Regular high school diploma | 266 | 21.1 |
| GED or alternative credential | 55 | 4.4 |
| Some college, less than 1 year | 177 | 14 |
| Some college, 1 or more years, no degree | 178 | 14.1 |
| Associate's degree | 119 | 9.4 |
| Bachelor's degree | 209 | 16.6 |
| Master's degree | 166 | 13.2 |
| Professional school degree | 15 | 1.2 |
| Doctorate degree | 24 | 1.9 |
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