
Sempronius
- County:
- Cayuga County
- County Seat:
- No
- Area (mi²):
- 29.341
- State:
- New York
Sempronius is located in Cayuga County, New York. Sempronius has a 2025 population of 883. Sempronius is currently growing at a rate of 0.91% annually and its population has increased by 4.5% since the most recent census, which recorded a population of 845 in 2020.
The average household income in Sempronius is $95,771 with a poverty rate of 7.74%. The median age in Sempronius is 45.8 years: 48 years for males, and 41.1 years for females.