Lost River, Idaho
12 topographic sheets cover this place, the earliest surveyed in 1935 and the latest in 1991. It stands in the Mackay census division. It lies in ZIP code area 83255. It stands on Willow Creek. The Survey maps it on the Grouse quadrangle. 42 people lived here at the 2020 count.
Population over time
2 figuresLost River fell from 68 to 42 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 | 68 | |
| 2020 | 42 | -26 (-38%) |
Topographic sheets covering this place
6 surveys from 12 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.
- 1935 USGS MacKay quadrangle1:96000
- 1955 USGS Idaho Falls quadrangle1:250000, 5 printings
- 1958 USGS Idaho Falls quadrangle1:250000, 2 printings
- 1960 USGS Grouse quadrangle1:62500, 2 printings
- 1988 USGS Arco quadrangle1:100000
- 1991 USGS Grouse quadrangle1:24000
Fires near this place
7 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 7 fires within 5 miles of Lost River between 1992 and 2020, burning about 54 acres in total. 4 started naturally. None was 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 |
|---|---|
| Natural | 4 |
| Debris and open burning | 2 |
| 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 |
|---|---|---|---|---|
| 12 September 2011 | Natural | under an acre | Idaho Falls District | HOOLIE |
| 27 August 2020 | Natural | under an acre | Salmon-Challis National Forest | HOOLEY |
| 23 July 2006 | Natural | 5.0 acres | Idaho Falls District | CHAMPANGE |
| 2 June 1992 | Natural | under an acre | Salmon-Challis National Forest | not named |
| 9 April 2003 | Debris and open burning | 5.0 acres | Idaho Falls District | SCHOOLHOUS |
| 19 April 2020 | Debris and open burning | 42 acres | Butte County | CAP |
| 17 October 2017 | Recreation and ceremony | 2.0 acres | Salmon-Challis National Forest | BEAR |
Settlements close enough to share some of these fires:
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.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Grouse | 0.1 miles | 12 | |
| Cliff (historical) | 13.5 miles | 14 | |
| Houston | 13.7 miles | 14 | |
| Alder City (historical) | 13.7 miles | 14 | |
| Rothas | 14.4 miles | 14 | |
| White Knob (historical) | 14.5 miles | 14 | |
| Leslie | 14.6 miles | 10 | |
| Mackay | 15.7 miles | 14 |
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 Lost River | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q1512664 | 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 2413648. 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.





