| Place Name | Marietta |
| Place Type | City |
| ZIP Code(s) | 45750 |
| County | Washington County |
| Area Code(s) | 220,740 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 14,102 |
| Population Growth Rate (2010-19) | -4.97% |
| Majority Ethnicity | White 94.31% |
| Metro/Micro Stats Area | Marietta, OH |
| US Congressional District(s) | Ohio 6th |
| State House Districts | 94,95 |
| State Senate Districts | 30 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.31% |
| African American | 2.42% |
| Hispanic | 0.33% |
| Asian | 1.25% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.7% |