Population by Prefecture

Population Change by Prefecture

Every prefecture on one measure at a time. Population is the count on the register at 1 January; the change is over the calendar year before it, split into the natural part (births less deaths) and the social part (everything else the register recorded, which is mostly moves but also includes naturalisations and corrections). Click a prefecture to put it in the chart below.

Population Pyramid

The register's own count of residents in each five-year age band, male to the left and female to the right. The prefecture is the one chosen anywhere on this page. Switch to shares to compare a prefecture's profile with Japan's, which is drawn behind it as a dashed outline. The register publishes this breakdown for one January so far, so there is no earlier profile to draw behind it yet; another follows each July.

Long-Run Prefecture History

Residents, age structure, births and deaths per thousand people, and the fertility rate — one prefecture at a time, from 1975.

The long run behind the latest year, from the Statistics Bureau's regional series. Registered residents are counted at 1 January and are split into Japanese and foreign residents only from 2013, when foreign residents joined the register; the total population line is the census and population estimate, measured at 1 October on a different basis, so the two are close but not the same number and neither is read off the other.

Municipality Detail

Every city, town, village and ward in one prefecture, on the same register year. A prefecture average hides what is happening inside it: a village losing 8% of its people can sit in a prefecture that looks merely flat. The prefecture here, in the chart above and on the map is one choice — change it anywhere and all three follow. Designated cities and districts are also published as totals of the municipalities inside them; those rows are left out by default, because adding them to the rest counts the same people twice.

Prefecture Detail

Every prefecture on the latest register year. Counts are official statistics exactly as published; shares and rates are calculated from them and carry their formula. The national row is the ministry's own total, not a sum of the rows — and the age columns are shown for all residents, where a small number of people have no recorded age.