| Place Name | Etna Township |
| Place Type | Township |
| ZIP Code(s) | 50126 50601 |
| County | Hardin County |
| Area Code(s) | 641 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 1,852 |
| Majority Ethnicity | White 86.18% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 50 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.18% |
| African American | 0% |
| Hispanic | 0.4% |
| Asian | 1.01% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 12.41% |