| Place Name | Marietta |
| Place Type | Town |
| ZIP Code(s) | 75566 |
| County | Cass County |
| Area Code(s) | 430,903 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 135 |
| Population Growth Rate (2010-19) | -14.18% |
| Majority Ethnicity | White 72.94% |
| US Congressional District(s) | Texas 4th |
| State House Districts | 9 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 72.94% |
| African American | 4.71% |
| Hispanic | 0% |
| Asian | 1.18% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 21.18% |