
Leyden
- County:
- Lewis County
- County Seat:
- No
- Area (mi²):
- 33.398
- State:
- New York
Leyden is located in Lewis County, New York. Leyden has a 2025 population of 1,579. Leyden is currently declining at a rate of -0.19% annually but its population has increased by 0.45% since the most recent census, which recorded a population of 1,572 in 2020.
The average household income in Leyden is $74,372 with a poverty rate of 18.15%. The median age in Leyden is 42.3 years: 45.7 years for males, and 36.2 years for females.