Lyon Mountain, New York

Lyon Mountain, New York
Location in Clinton County and the state of New York.
Coordinates: 44°43′44″N 73°54′28″W / 44.72889°N 73.90778°W / 44.72889; -73.90778
CountryUnited States
StateNew York
CountyClinton
TownDannemora
Area
  Total
10.52 sq mi (27.25 km2)
  Land10.51 sq mi (27.23 km2)
  Water0.01 sq mi (0.02 km2)
Elevation
1,798 ft (548 m)
Population
 (2020)
  Total
421
  Density40.05/sq mi (15.46/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP codes
12952, 12955
Area code518
FIPS code36-43951
GNIS feature ID0956192

Lyon Mountain is a hamlet and census-designated place located in the town of Dannemora in Clinton County, New York, United States. The population was 423 at the 2010 census.

The northern slopes of Lyon Mountain are in the southern part of the community, with the 3,840-foot (1,170 m) summit to the south in the town of Saranac.

The Lyon Mountain Correctional Facility, a minimum security prison, was located in the community. The facility closed in 2011, and has been purchased by a Canadian who has mined sand for hydrofracking from the site.