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  1. Catalog
  2. 02 Population and Households
  3. Population Census

Population Census

Population Census — the English name the statistics portal publishes. Ministry of Internal Affairs and Communications runs it every five years, and the statistics portal’s file tree goes back to 1920. One StackData record, joined across sources.

POP · 00200521

Population Census

Ministry of Internal Affairs and Communications — Ministry of Internal Affairs and Communications

Field
02 · POP — Population and Households / Population and Households
Sub-field
Population / Population — code unstated
Statistic type
Fundamental Statistics / Fundamental Statistics
Coverage
1920 → 2025
Cadence
Every 5 years
Shape
Rows and columns unstated
Formats
EXCEL · CSV · PDF · EXCEL (view-only) · DB on the statistics portal; XLSX on the file portal
Licence
CC BY on the file portal’s resource; Government Standard Terms of Use 2.0 site-wide on the statistics portal
Last change
Unstated
Status
Live — the statistics portal lists a 2025 census
Sources
two sources
StackData id
POP · 00200521 — the field slug plus the statistics portal’s statistic code

Known gaps Shape is unstated because neither portal publishes a row or column count for this statistic. Last change is unstated because StackData read no publication or revision date on either source record. the file portal states no update frequency here — the field holds an empty string — so the five-year cadence comes from the statistics portal’s sentence, not from the file portal.

Normalization

What the portals store, and what StackData stores.

Every value on the left is a real string read from the file portal or the statistics portal. The right-hand column is the whole product: one value per field, whatever the portal typed.

Five fields on this record

and the licence twice, because there are two of them

Raw

Normalized

  • cc-by — this record, on the file portal’s resource
  • CC-BY — jinji_20211001_0008, uppercase and hyphenated
  • cc-by-4.0 — a separate key in the file portal’s licence list
  • cc-by-2.1-jp — and a third key, for a localised port
Normalized to CC BY One portal, four keys for Creative Commons Attribution. the file portal’s own licence facet counts CC BY at 14,669 datasets and CC-BY at 679 as if they were different licences. StackData folds case and punctuation and keeps a version number only where the portal states one.
  • gjstu — the file portal’s vocabulary key
  • Government Standard Terms of Use 2.0 — the display label, stored in the id field — not a vocabulary key
  • Government Standard Terms of Use 2.0 — the statistics portal’s site terms, written without the spaces
Normalized to Government Standard Terms of Use 2.0 Government Standard Terms of Use 2.0 is not a vocabulary key at all — it is the human-readable label pasted into the machine field, spaces and all. One the file portal dataset, mlit_20140919_0726, carries both spellings across its own resources.
  • "" — the file portal’s frequency field on this record is an empty string — flagged: no value published
  • “Conducted every five years” — the statistics portal, written as a sentence
Normalized to Every 5 years the file portal’s frequency field is free text with no code list behind it. Across the portal it holds, in translation, “1 year”, the same string with a different digit character, “1 month”, “5 years”, “10 minutes”, “irregular”, “not updated” and “at least once a year”.
  • Population and Households — the file portal’s category, a label with no code
  • code 02 · Population and Households — the other source, code and label together
Normalized to 02 · POP · Population and Households The 17 category labels match string for string across sources, so this join needs no crosswalk. the statistics portal carries the code, the file portal only the label, and StackData adds the slug for URLs. One trap: the statistics portal codes Other as 99 while listing it seventeenth, so a join on position breaks on the last row.
  • soumu_20220803_0013 — the file portal’s package id
  • 00200521 — the statistics portal’s statistic code
Normalized to POP · 00200521 the file portal mints its own id and publishes no the statistics portal code as a field. The only link is inside the resource URL, and this record's one the file portal resource is hosted on the statistics portal — as are resources in 4,533 of the file portal’s 18,144 datasets. Across those, the the statistics portal key appears under twelve parameter names: statInfId, sinfid, stat_infid, fileId, toukei, tstat, listID, lid, tclassID, bid, tid and tstatCode.
Licence keys read from the source’s own licence vocabulary; licence and format counts read from its facets in August 2026. Every dataset id named above is a real the file portal record.

Coverage

Every five-year step, 1920 to 2025.

One cell per five-year step. Shade is the number of files the statistics portal publishes for that census year, where it publishes a number at all. Amber is a step with no year in the statistics portal’s English list.

Source records

The two entries behind this one.

StackData rolls the file portal datasets up to the the statistics portal statistic they belong to. the file portal holds seven datasets with Population Census in the title; the one below is the record joined here.

  • soumu_20220803_0013
    Statistical tables by prefecture and municipality (Population Census) — main results, 2020 Statistical Tables by Prefecture and Municipality (Population Census) — Main Results by Prefecture and Municipality, 2020 translation
    Ministry of Internal Affairs and Communications — Ministry of Internal Affairs and Communications
    the file portal
    • XLSX
  • 00200521
    Population Census Population Census
    Ministry of Internal Affairs and Communications — Ministry of Internal Affairs and Communications
    the statistics portal
    • EXCEL
    • CSV
    • DB
    • PDF
    • EXCEL (view-only)
  • EXCEL 55,023
  • DB 35,511
  • CSV 27,586
  • PDF 1,826
  • EXCEL view-only 9

the statistics portal’s format facet for this statistic, read in August 2026. Bars are scaled to the largest bucket, so the nine view-only files draw no visible fill. DB is the statistics portal’s queryable database layer rather than a file type; the file portal has no equivalent.

Every record reads like this one.

Same fields, same honesty about what the portals leave blank.