
Seneca
- County:
- Ontario County
- County Seat:
- No
- Area (mi²):
- 50.314
- State:
- New York
Seneca is located in Ontario County, New York. Seneca has a 2025 population of 2,595. Seneca is currently declining at a rate of -0.27% annually and its population has decreased by -1.78% since the most recent census, which recorded a population of 2,642 in 2020.
The average household income in Seneca is $97,263 with a poverty rate of 4.82%. The median age in Seneca is 44.5 years: 45.2 years for males, and 44.4 years for females.