| Place Name | Lyon Mountain |
| Place Type | Census Designated Place |
| ZIP Code(s) | 12952 |
| County | Clinton County |
| Area Code(s) | 518,838 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 305 |
| Population Growth Rate (2010-19) | -0.47% |
| Majority Ethnicity | White 97.97% |
| Metro/Micro Stats Area | Plattsburgh, NY |
| US Congressional District(s) | New York 21st |
| State Assembly Districts | 115 |
| State Senate Districts | 45 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.97% |
| African American | 1.22% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.81% |