This was 12.7 percent higher than the state average of 40.5 percent. In 2020 the total municipality population reached 670.
91.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Cinco Bayou for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 41 | 8.3 |
| Regular high school diploma | 81 | 16.3 |
| GED or alternative credential | 17 | 3.4 |
| Some college, less than 1 year | 50 | 10.1 |
| Some college, 1 or more years, no degree | 43 | 8.7 |
| Associate's degree | 52 | 10.5 |
| Bachelor's degree | 129 | 26 |
| Master's degree | 63 | 12.7 |
| Professional school degree | 5 | 1 |
| Doctorate degree | 15 | 3 |
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