This was 19.6 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 12,401.
87.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Markham for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 889 | 12.1 |
| Regular high school diploma | 1,939 | 26.4 |
| GED or alternative credential | 311 | 4.2 |
| Some college, less than 1 year | 381 | 5.2 |
| Some college, 1 or more years, no degree | 2,067 | 28.1 |
| Associate's degree | 643 | 8.7 |
| Bachelor's degree | 752 | 10.2 |
| Master's degree | 317 | 4.3 |
| Professional school degree | 18 | 0.2 |
| Doctorate degree | 40 | 0.5 |
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