World Prisons
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Korea, Democratic People's Republic of

Onsong concentration camp

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How to send mail, money, and visit Onsong concentration camp

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Background

The Onsong concentration camp was an internment camp in Changpyong, Onsong County, North Hamgyong, North Korea. It housed approximately 15,000 political prisoners. The camp was officially known as Concentration Camp (Kwan-li-so) No. 12. Although information about the camp is scarce, two defectors have alleged the forcible suppression of a large riot in May 1987 at the camp.

Source: Wikipedia article lead, CC-BY-SA.

Capacity

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Current population

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Occupancy

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Year opened

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Operational

Figures from official sources · verified 28 May 2026 · methodology

Facility profile

Operator

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Population held

Mixed/unknown

Opened

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Region

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Security level

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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.

Contact & address

No public contact details available.

Conditions Risk Score

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Insufficient data
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Data completeness

16%

How many of our profile fields are populated. We surface this so families and researchers know the limits.

Sources

Cite this page

Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.

APA
World Prisons. (2026). Onsong concentration camp. Retrieved October 24, 2026, from https://worldprisons.com/prisons/onsong-concentration-camp
Chicago
"Onsong concentration camp." World Prisons. Accessed October 24, 2026. https://worldprisons.com/prisons/onsong-concentration-camp.
BibTeX
@misc{worldprisons-onsong-concentration-camp,
  author = {{World Prisons}},
  title = {Onsong concentration camp},
  year = {2026},
  url = {https://worldprisons.com/prisons/onsong-concentration-camp},
  urldate = {2026-10-24}
}