Lyon Mountain, New York
18 topographic sheets cover this place, the earliest surveyed in 1911 and the latest in 1986. It stands in Dannemora town. It lies in ZIP code area 12952. It stands on Brandy Brook. The Survey maps it on the Lyon Mountain quadrangle. 421 people lived here at the 2020 count. It stands 1,798 feet above sea level.
Then and now
1911 to 1986The same ground, surveyed 75 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


On record in Lyon Mountain
Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.
On the National Register 1 record
Lyon Mountain Railroad Stationlisted 2002
Population over time
2 figuresLyon Mountain fell from 423 to 421 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2010 | 423 | |
| 2020 | 421 | -2 (-0%) |
Topographic sheets covering this place
8 surveys from 18 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1911 USGS Lyon Mountain quadrangle1:62500, 2 printings
- 1913 USGS Lyon Mountain quadrangle1:62500, 5 printings
- 1931 USGS Lyon Mountain quadrangle1:62500
- 1950 USGS Lake Champlain quadrangle1:250000, 2 printings
- 1958 USGS Lake Champlain quadrangle1:250000, 2 printings
- 1962 USGS Lake Champlain quadrangle1:250000, 3 printings
- 1968 USGS Lyon Mountain quadrangle1:24000
- 1986 USGS Lake Champlain North quadrangle1:100000, 2 printings
Fires near this place
9 since 2003Regional context, not property-specific evidence. The federal wildfire occurrence database lists 9 fires within 5 miles of Lyon Mountain between 2003 and 2020, burning about 11 acres in total. 1 started naturally. 3 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 3 |
| Arson/incendiarism | 3 |
| Natural | 1 |
| Debris and open burning | 1 |
| Recreation and ceremony | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 22 August 2012 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 3 July 2004 | Missing data/not specified/undetermined | under an acre | Fire Department of New York | not named |
| 26 June 2013 | Natural | under an acre | New York Forest Rangers | LYON MT TRANSFORMER |
| 24 May 2016 | Recreation and ceremony | under an acre | Fire Department of New York | N/A |
| 21 May 2017 | Arson/incendiarism | under an acre | Fire Department of New York | N/A |
| 19 May 2003 | Debris and open burning | 5.0 acres | New York Forest Rangers | not named |
| 11 May 2019 | Arson/incendiarism | under an acre | Fire Department of New York | N/A |
| 15 November 2020 | Missing data/not specified/undetermined | 5.0 acres | Fire Department of New York | NA |
Settlements close enough to share some of these fires:
Mines and quarries near this place
9 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 9 workings within 5 miles of Lyon Mountain: 8 past producers, 1 producer. 1 still produces. What was taken out: Iron, Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Old Tailings Pile Pit | Sand and Gravel, Construction | Producer | ||
| 81 Mine | Iron | Past Producer | 1840 | |
| Burden Deposit | Iron | Past Producer | 1875, 1967 | |
| Eighty-One Mine | Iron | Past Producer | 1878 | |
| Parkhurst Mine | Iron | Past Producer | 1889, 1892 | |
| Parkhurst Mine | Iron | Past Producer | 1889 | |
| Phillips Vein | Iron | Past Producer | Replacement | |
| Phillips Vein | Iron | Past Producer | ||
| Williams Mine | Iron | Past Producer | 1850, 1871, 1967 |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on Lyon Mountain | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q3460412 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 956192. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.







