
Mannsville
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 0.897
- State:
- New York
Mannsville is a village located in Jefferson County, New York. Mannsville has a 2025 population of 318. Mannsville is currently declining at a rate of -0.31% annually and its population has decreased by -1.24% since the most recent census, which recorded a population of 322 in 2020.
The average household income in Mannsville is $84,007 with a poverty rate of 15.1%. The median age in Mannsville is 32.8 years: 32.3 years for males, and 36.8 years for females.