This number was 24.8 percent lower than the state average of 45.1 percent. In 2017 the total municipality population reached 1,326.
78.5 percent of the population had at least a high school diploma or the equivalent. The table below shows how many
Gretna residents who were at least 25 years old in 2017 held each of the listed degrees.
Degree distribution in Gretna for 2017*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 203 | 21.5 |
| Regular high school diploma | 233 | 24.7 |
| GED or alternative credential | 62 | 6.6 |
| Some college less than 1 year | 93 | 9.9 |
| Some college 1 or more years no degree | 161 | 17.1 |
| Associate's degree | 45 | 4.8 |
| Bachelor's degree | 79 | 8.4 |
| Master's degree | 64 | 6.8 |
| Professional school degree | 3 | 0.3 |
| Doctorate degree | 0 | 0 |
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