| Place Name | Sempronius |
| Place Type | Town |
| ZIP Code(s) | 13118 |
| County | Cayuga County |
| Area Code(s) | 315,680 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 844 |
| Majority Ethnicity | White 98.46% |
| Metro/Micro Stats Area | Auburn, NY |
| US Congressional District(s) | New York 24th |
| State Assembly Districts | 126 |
| State Senate Districts | 51 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.46% |
| African American | 0.12% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.42% |