This number was 15.8 percent lower than the state average of 39.1 percent. In 2017 the total municipality population reached 147.
81.7 percent of the population had at least a high school diploma or the equivalent. The table below shows how many
Marietta residents who were at least 25 years old in 2017 held each of the listed degrees.
Degree distribution in Marietta for 2017*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 22 | 18.3 |
| Regular high school diploma | 41 | 34.2 |
| GED or alternative credential | 3 | 2.5 |
| Some college less than 1 year | 7 | 5.8 |
| Some college 1 or more years no degree | 19 | 15.8 |
| Associate's degree | 11 | 9.2 |
| Bachelor's degree | 9 | 7.5 |
| Master's degree | 6 | 5 |
| Professional school degree | 2 | 1.7 |
| Doctorate degree | 0 | 0 |
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