This was 16.3 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 13,486.
89.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Mason County for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 1,066 | 10.9 |
| Regular high school diploma | 3,271 | 33.4 |
| GED or alternative credential | 655 | 6.7 |
| Some college, less than 1 year | 840 | 8.6 |
| Some college, 1 or more years, no degree | 1,273 | 13 |
| Associate's degree | 1,064 | 10.9 |
| Bachelor's degree | 1,130 | 11.5 |
| Master's degree | 432 | 4.4 |
| Professional school degree | 49 | 0.5 |
| Doctorate degree | 5 | less than 0.1 |
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