| Place Name | Union Township (Barton County) |
| Place Type | Township |
| ZIP Code(s) | 64759 64784 |
| County | Barton County |
| Area Code(s) | 417 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 372 |
| Majority Ethnicity | White 96.51% |
| US Congressional District(s) | Missouri 4th |
| State House Districts | 127 |
| State Senate Districts | 31 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.51% |
| African American | 0% |
| Hispanic | 3.49% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |