This was 4 percent lower than the state average of 39.6 percent. In 2020 the total municipality population reached 654.
85.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Port Sanilac for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 73 | 14.2 |
| Regular high school diploma | 129 | 25.1 |
| GED or alternative credential | 19 | 3.7 |
| Some college, less than 1 year | 39 | 7.6 |
| Some college, 1 or more years, no degree | 71 | 13.8 |
| Associate's degree | 56 | 10.9 |
| Bachelor's degree | 85 | 16.5 |
| Master's degree | 20 | 3.9 |
| Professional school degree | 18 | 3.5 |
| Doctorate degree | 4 | 0.8 |
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