This was 12.1 percent lower than the state average of 47.4 percent. In 2020 the total municipality population reached 7,019.
85.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Collinsville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 706 | 14.6 |
| Regular high school diploma | 1,247 | 25.9 |
| GED or alternative credential | 294 | 6.1 |
| Some college, less than 1 year | 332 | 6.9 |
| Some college, 1 or more years, no degree | 541 | 11.2 |
| Associate's degree | 580 | 12 |
| Bachelor's degree | 665 | 13.8 |
| Master's degree | 401 | 8.3 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 54 | 1.1 |
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