
Lyonsdale
- County:
- Lewis County
- County Seat:
- No
- Area (mi²):
- 68.195
- State:
- New York
Lyonsdale is located in Lewis County, New York. Lyonsdale has a 2025 population of 1,148. Lyonsdale is currently declining at a rate of -0.61% annually and its population has decreased by -2.3% since the most recent census, which recorded a population of 1,175 in 2020.
The average household income in Lyonsdale is $55,869 with a poverty rate of 16.24%. The median age in Lyonsdale is 46.7 years: 47.3 years for males, and 46.4 years for females.