Family communication toolkit
A step-by-step guide for families using the Japanprison system. Everything below is aggregated from public sources; the prison's own official channels are linked where available.
Data is aggregated from public sources and may be incomplete or out of date.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.
Address block. Copy and paste into your envelope or shipping label.
〒postal-code 都道府県 city 刑務所名 1-35-1 Kosuge Katsushika, Tokyo 124-0001 Japan Inmate Full Name (Roman + 漢字 if known)
This prison's specific mail rules
Mail screened. Format: ã124-0001 æ±äº¬é½è飾åºå°è 1-35-1 æ±äº¬æç½®æ + name.
Country-wide mail rules
Visit a Japan Post office; address to the prison with the inmate's name and the prison's account reference.
This prison's general number: +81 3 3690 8131(administrative — you cannot speak to inmates this way)
Book a visit: Walk-in or written application
Visits are typically 15 minutes weekdays only, one visitor at a time for pre-charge detainees.
This prison's visiting rules
Visits 15 minutes, weekdays only. Pre-charge detainees may be limited to one visitor at a time; foreign nationals via consulate.
Country-wide visiting rules
Important
This toolkit aggregates publicly available guidance. Rules vary by facility and change over time — always confirm with the prison's official contact channels before sending mail, money, or attempting a visit.