United States · Arizona
Poston War Relocation Center
Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.
For families
How to send mail, money, and visit Poston War Relocation Center
Step-by-step guidance using the United States system — addresses, money services, visit booking, what to bring on your first visit.
Gallery
From Wikimedia Commons (CC-BY-SA where not otherwise stated).

Photo by United States National Park Service via Wikimedia Commons (Public domain)

Photo by United States National Park Service via Wikimedia Commons (Public domain)

Photo by United States National Park Service via Wikimedia Commons (Public domain)

Photo by United States National Park Service via Wikimedia Commons (Public domain)

Photo by U.S. National Park Service, restoration/cleanup by National Park Maps (https://npmaps.com) via Wikimedia Commons (Public domain)

Photo by sonora ortiz via Wikimedia Commons (CC BY-SA 4.0)

Photo by sonora ortiz via Wikimedia Commons (CC BY-SA 4.0)

Photo by sonora ortiz via Wikimedia Commons (CC BY-SA 4.0)
Background
The Poston Internment Camp, located in Yuma County (now in La Paz County) in southwestern Arizona, was the largest (in terms of area) of the 10 American concentration camps operated by the War Relocation Authority during World War II. The site was composed of three separate camps arranged in a chain from north to south, three miles from each other. Internees named the camps Roasten, Toastin, and Dustin, based on their desert locations. The Colorado River was about 3 miles (4.8 km) to the west, outside of the camp perimeter. Poston was built on the Colorado River Indian Reservation, over the objections of the Tribal Council, who refused to be a part of doing to others what had been done to their tribe. Army commanders and officials of the Bureau of Indian Affairs, though, overruled the council, seeing the opportunity to improve infrastructure and agricultural development (which would remain after the war and aid the reservation's permanent population) on the War Department budget and with thousands of "volunteers".
Source: Wikipedia article lead, CC-BY-SA.
Capacity
—
Current population
—
Occupancy
—
Year opened
1942
Operational
Figures from official sources · verified 29 May 2026 · methodology
Facility profile
Operator
—
Population held
Mixed/unknown
Opened
1942
Region
Arizona
Security level
—
Death-row facility
No
Conditions
No conditions summary available yet.
Visiting
No visiting information available.
Mailing
No mailing information available.
Practical info
Contact the operator's website for inmate-specific procedures.
Known issues
No major issues documented in our database.
Notable inmates
- George Fujimoto Jr.1921–2011 · diarist
- Toranosuke Fujimoto1882 · farmer
- Pearl Mitsu Sonoda1918–2015 · ichthyologist
Pearl Mitsu Sonoda (May 17, 1918 â March 4, 2015), was an American ichthyologist and biologist who was interned with her family in an American War Relocation Center during World War II because they had Japanese heritage.
Source: Wikidata + Wikipedia.
Contact & address
No public contact details available.
Conditions Risk Score
Derived signal — not a judgement. How it's calculated
Related facilities
Same country, matched on type + security level where possible.
- Rikers IslandEast Elmhurst, NYMixedLocal jail42% occupancy
- Franklin County Detention FacilitySt. AlbansMaximumCounty jail660% occupancy
- Gallia County JailGallipolisCounty jail336% occupancy
- Noble County JailCaldwellCounty jail542% occupancy
- Woodman State JailGatesvilleMaximumState prison720% occupancy
- Stark County JailToulonCounty jail3446% occupancy
Data completeness
16%How many of our profile fields are populated. We surface this so families and researchers know the limits.
Sources
- Wikipedia — Wikimedia Foundation
- Wikidata — Wikimedia Foundation
- Wikidata (Q7234427)
- Wikipedia
- Wikimedia Commons
- See /data-sources for our overall methodology.
Cite this page
Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.
World Prisons. (2026). Poston War Relocation Center. Retrieved October 20, 2026, from https://worldprisons.com/prisons/poston-war-relocation-center
"Poston War Relocation Center." World Prisons. Accessed October 20, 2026. https://worldprisons.com/prisons/poston-war-relocation-center.
@misc{worldprisons-poston-war-relocation-cente,
author = {{World Prisons}},
title = {Poston War Relocation Center},
year = {2026},
url = {https://worldprisons.com/prisons/poston-war-relocation-center},
urldate = {2026-10-20}
}