
Hornellsville
- County:
- Steuben County
- County Seat:
- No
- Area (mi²):
- 42.884
- State:
- New York
Hornellsville is located in Steuben County, New York. Hornellsville has a 2025 population of 3,932. Hornellsville is currently declining at a rate of -0.28% annually and its population has decreased by -1.99% since the most recent census, which recorded a population of 4,012 in 2020.
The average household income in Hornellsville is $85,382 with a poverty rate of 9.64%. The median age in Hornellsville is 51.2 years: 50.6 years for males, and 51.7 years for females.