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France · DISP Paris · Osny

Centre pénitentiaire de Osny Pontoise

Centre pénitentiairemaleOvercrowded (165%)ModerateHigh
Verified
Aging · 3mo ago
Sources last reviewed on

Data is aggregated from public sources and may be incomplete or out of date.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 Centre pénitentiaire de Osny Pontoise

Step-by-step guidance using the France system — addresses, money services, visit booking, what to bring on your first visit.

Open toolkit

(selon l'OIP) Adresse : Chemin Vert 95520 Osny. Date de mise en service : 1990. Nature : Maison d'arrêt. Capacité opérationnelle : 749 places pour 964 personnes hébergées. Densité carcérale : 153,3 %.

Capacity

750

Current population

1,238

Occupancy

165%

Year opened

1990

Operational

Figures from official sources · verified 9 Jul 2026 · methodology

Facility profile

Operator

—

Population held

male

Opened

1990

Region

DISP Paris

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.

Contact & address

Chemin Vert, Osny 95520
01.82.31.27.00

Conditions Risk Score

Derived signal — not a judgement. How it's calculated

22/100
Moderate concern22/100
Overcrowding
22/30
Oversight reports
0/30
Structural flags
0/15
Death signals
0/15
Conditions text
0/10

What the score is responding to:

  • · Severely overcrowded at 165% of capacity

This facility scores 22. The national average across 732 scored France facilities is 12 — 10 points above national average.

Related facilities

All in France →

Same country, matched on type + security level where possible.

Compared to other facilities in France

731 peers
Conditions risk scorethis: 22/100 · peers avg: 12/100 (+78%)

Higher risk than 61% of peer facilities in France.

Occupancythis: 165% · peers avg: 139% (+19%)
Capacity (beds)this: 750 · peers avg: 343 (+119%)

Data completeness

52%

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

Sources

Cite this page

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APA
World Prisons. (2026). Centre pénitentiaire de Osny Pontoise. Retrieved October 20, 2026, from https://worldprisons.com/prisons/centre-penitentiaire-de-osny-pontoise
Chicago
"Centre pénitentiaire de Osny Pontoise." World Prisons. Accessed October 20, 2026. https://worldprisons.com/prisons/centre-penitentiaire-de-osny-pontoise.
BibTeX
@misc{worldprisons-centre-penitentiaire-de-osn,
  author = {{World Prisons}},
  title = {Centre pénitentiaire de Osny Pontoise},
  year = {2026},
  url = {https://worldprisons.com/prisons/centre-penitentiaire-de-osny-pontoise},
  urldate = {2026-10-20}
}