Heart Mountain Relocation Center

A National Historic Landmark. Built in 1942. Listed on the National Register of Historic Places in 1985.

From the record

“The Heart Mountain War Relocation Center, named after nearby Heart Mountain and located midway between the northwest Wyoming towns of Cody and Powell, was one of ten concentration camps used for the internment of Japanese Americans evicted during World War II from their local communities in the West Coast Exclusion Zone by the executive order of President Franklin Roosevelt.”
Wikipedia article Heart Mountain Relocation Center, CC BY-SA 4.0.

One of 38 National Register listings published here for Park County · listed in 1985 · category: District · built in 1942 · a National Historic Landmark.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

Address. 1/2 mi. from WY Alt. 14 between Cody and Powell/ 1500 Road 19, Ralston, 82435
When was it listed? December 1985
Category. district
Census division. Powell
When was it built? 1942
National Register reference number. 85003167 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

23 since 1996

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 23 fires within 5 miles of Heart Mountain Relocation Center between 1996 and 2020, burning about 58 acres in total. None 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
Debris and open burning	8
Missing data/not specified/undetermined	8
Recreation and ceremony	4
Fireworks	3

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
13 September 2019	Debris and open burning	under an acre	Park County	90 ROAD 20
7 August 2013	Debris and open burning	under an acre	Wyoming State Forestry	ANDO
25 August 2018	Debris and open burning	4.0 acres	Park County	166
16 August 2020	Missing data/not specified/undetermined	under an acre	Park County	83 LANE 16
16 August 2002	Recreation and ceremony	7.0 acres	Wyoming State Forestry	not named
9 July 2017	Missing data/not specified/undetermined	1.0 acres	Park County	121
8 July 2002	Recreation and ceremony	under an acre	Wyoming State Forestry	not named
6 July 2020	Missing data/not specified/undetermined	1.5 acres	Park County	155 LANE 17

Every fire recorded in Park County

Storms near this property

3 since 2004

Regional context, not property-specific evidence. The National Weather Service names Ralston, the town this property stands in, in 3 storm reports between 2004 and 2013: 2 hail, 1 thunderstorm wind. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

When	Event	Place named	Harm	What the report says
July 2013	Hail	Ralston	-	A combination of hail, wind, and heavy rain caused extensive damage to crops in the Powell Valley. Most of the damage occurred to the barley crop, but beans and beets were also impacted. The storm produced one-half inch diameter hail, wind gusts to 51 mph, and nearly one-half inch of rain in less than 15 minutes.
August 2009	Thunderstorm Wind	Ralston	-	Thunderstorm outflow winds topped out at 61 mph in Ralston.
June 2004	Hail	Ralston	-	no account filed

Every storm recorded in Park County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Listed places nearby

1 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Photograph	Property	Distance	Listed
	Ralston Community Clubhouse	5.5 miles	1998

Sources for this property

National Archives record	The nomination case file for reference 85003167 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Park County	All 38 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
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.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.