| Place Name | Clay Township (Hardin County) |
| Place Type | Township |
| ZIP Code(s) | 50601 50627 50672 |
| County | Hardin County |
| Area Code(s) | 641 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 454 |
| Majority Ethnicity | White 93.51% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 50 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.51% |
| African American | 0.87% |
| Hispanic | 1.95% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.68% |