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Research dossier · General Reference

ISO 3166-2:JP

entry for Japan in ISO 3166–2

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 19, 2026
Entity authorityQ456671 ↗
Source-derived summary

ISO 3166-2:JP is the entry for Japan in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g. provinces or states) of all countries coded in ISO 3166-1.

Currently for Japan, ISO 3166-2 codes are defined for 47 prefectures.

Each code consists of two parts, separated by a hyphen. The first part is JP, the ISO 3166-1 alpha-2 code of Japan. The second part is two digits (01–47), which is the Japanese Industrial Standard JIS X 0401 code of the prefecture. The codes are assigned roughly from north to south.

Current codes

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).

Editorial summary

“ISO 3166-2:JP” enters the record as entry for Japan in ISO 3166–2. Crown Archives preserves that source wording while asking what 3166-2, entry and Japan can confirm, complicate or overturn.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current 128-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around 3166-2, entry and Japan.
Editorial analysis

Why this record matters

“ISO 3166-2:JP” is worth following because a concise public description often conceals a longer documentary argument. Here, 3166-2, entry and Japan provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 19, 2026. The linked authority identifier is Q456671. None of the 1 selected statements returned an explicit reference.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “ISO 3166-2:JP”, its source revision and the description used here.
  2. Expand the search: follow ISO 3166-2:JP primary sources, ISO 3166-2:JP archive and 3166-2 research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “ISO 3166-2:JP”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
Subject index

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Source & attribution

This entry incorporates text from “ISO 3166-2:JP” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.