| Place Name | Union Township (Warren County) |
| Place Type | Township |
| County | Warren County |
| Area Code(s) | 515 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 453 |
| Majority Ethnicity | White 95.06% |
| Metro/Micro Stats Area | Des Moines-West Des Moines, IA |
| US Congressional District(s) | Iowa 3rd |
| State House Districts | 26 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.06% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 4.94% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |