| Place Name | Seneca |
| Place Type | Census Designated Place |
| ZIP Code(s) | 69161 |
| County | Thomas County |
| Area Code(s) | 308 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 21 |
| Population Growth Rate (2010-19) | 48.48% |
| Majority Ethnicity | White 90.32% |
| US Congressional District(s) | Nebraska 3rd |
| State Legislature Districts | 43 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.32% |
| African American | 0% |
| Hispanic | 9.68% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |