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Centralization of Political Power Index in Japan

Japan: Centralization of Political Power Index was 0.094 in 2025. ◆ Volatile

Latest (2025)
0.094
Change on year
unchanged
World rank
143rd
of 176 countries
All-time high
0.951
in 1868
All-time low
0.082
in 2000
Years of data
237
1789–2025

Centralization of Political Power Index in Japan, 1789–2025

00.20.40.60.81178919072025

Source: V-Dem (2026) – processed by Our World in Data.

Analysis

The most recent figure for centralization of political power index in Japan is 0.094, measured in 2025.

The figure is down 1.1% over ten years.

Over the whole period, centralization of political power index in Japan peaked at 0.951 in 1868 and was at its lowest, 0.082, in 2000.

That places Japan 143rd out of 176 countries with data for 2025, putting it in the bottom quarter.

The series is highly variable year to year, so single readings are best treated with caution.

Centralization of Political Power Index in Japan, year by year

Year Value Change
1789 0.95 —
1790 0.95 +0.0%
1791 0.95 +0.0%
1792 0.95 +0.0%
1793 0.95 +0.0%
1794 0.95 +0.0%
1795 0.95 +0.0%
1796 0.95 +0.0%
1797 0.95 +0.0%
1798 0.95 +0.0%
1799 0.95 +0.0%
1800 0.95 +0.0%
1801 0.95 +0.0%
1802 0.95 +0.0%
1803 0.95 +0.0%
1804 0.95 +0.0%
1805 0.95 +0.0%
1806 0.95 +0.0%
1807 0.95 +0.0%
1808 0.95 +0.0%
1809 0.95 +0.0%
1810 0.95 +0.0%
1811 0.95 +0.0%
1812 0.95 +0.0%
1813 0.95 +0.0%
1814 0.95 +0.0%
1815 0.95 +0.0%
1816 0.95 +0.0%
1817 0.95 +0.0%
1818 0.95 +0.0%
1819 0.95 +0.0%
1820 0.95 +0.0%
1821 0.95 +0.0%
1822 0.95 +0.0%
1823 0.95 +0.0%
1824 0.95 +0.0%
1825 0.95 +0.0%
1826 0.95 +0.0%
1827 0.95 +0.0%
1828 0.95 +0.0%
1829 0.95 +0.0%
1830 0.95 +0.0%
1831 0.95 +0.0%
1832 0.95 +0.0%
1833 0.95 +0.0%
1834 0.95 +0.0%
1835 0.95 +0.0%
1836 0.95 +0.0%
1837 0.95 +0.0%
1838 0.95 +0.0%
1839 0.95 +0.0%
1840 0.95 +0.0%
1841 0.95 +0.0%
1842 0.95 +0.0%
1843 0.95 +0.0%
1844 0.95 +0.0%
1845 0.95 +0.0%
1846 0.95 +0.0%
1847 0.95 +0.0%
1848 0.95 +0.0%
1849 0.95 +0.0%
1850 0.95 +0.0%
1851 0.95 +0.0%
1852 0.95 +0.0%
1853 0.95 +0.0%
1854 0.95 +0.0%
1855 0.95 +0.0%
1856 0.95 +0.0%
1857 0.95 +0.0%
1858 0.95 +0.0%
1859 0.95 +0.0%
1860 0.95 +0.0%
1861 0.95 +0.0%
1862 0.95 +0.0%
1863 0.95 +0.0%
1864 0.95 +0.0%
1865 0.95 +0.0%
1866 0.95 +0.0%
1867 0.95 +0.0%
1868 0.951 +0.1%
1869 0.914 -3.9%
1870 0.837 -8.4%
1871 0.837 +0.0%
1872 0.837 +0.0%
1873 0.837 +0.0%
1874 0.837 +0.0%
1875 0.642 -23.3%
1876 0.584 -9.0%
1877 0.584 +0.0%
1878 0.584 +0.0%
1879 0.584 +0.0%
1880 0.584 +0.0%
1881 0.584 +0.0%
1882 0.584 +0.0%
1883 0.584 +0.0%
1884 0.584 +0.0%
1885 0.584 +0.0%
1886 0.584 +0.0%
1887 0.584 +0.0%
1888 0.584 +0.0%
1889 0.487 -16.6%
1890 0.332 -31.8%
1891 0.327 -1.5%
1892 0.327 +0.0%
1893 0.327 +0.0%
1894 0.327 +0.0%
1895 0.327 +0.0%
1896 0.327 +0.0%
1897 0.327 +0.0%
1898 0.327 +0.0%
1899 0.327 +0.0%
1900 0.327 +0.0%
1901 0.333 +1.8%
1902 0.333 +0.0%
1903 0.333 +0.0%
1904 0.333 +0.0%
1905 0.333 +0.0%
1906 0.333 +0.0%
1907 0.333 +0.0%
1908 0.333 +0.0%
1909 0.333 +0.0%
1910 0.33 -0.9%
1911 0.33 +0.0%
1912 0.33 +0.0%
1913 0.321 -2.7%
1914 0.336 +4.7%
1915 0.336 +0.0%
1916 0.336 +0.0%
1917 0.336 +0.0%
1918 0.322 -4.2%
1919 0.322 +0.0%
1920 0.322 +0.0%
1921 0.322 +0.0%
1922 0.322 +0.0%
1923 0.322 +0.0%
1924 0.322 +0.0%
1925 0.322 +0.0%
1926 0.322 +0.0%
1927 0.322 +0.0%
1928 0.322 +0.0%
1929 0.322 +0.0%
1930 0.322 +0.0%
1931 0.322 +0.0%
1932 0.322 +0.0%
1933 0.331 +2.8%
1934 0.331 +0.0%
1935 0.331 +0.0%
1936 0.331 +0.0%
1937 0.331 +0.0%
1938 0.332 +0.3%
1939 0.332 +0.0%
1940 0.332 +0.0%
1941 0.332 +0.0%
1942 0.332 +0.0%
1943 0.332 +0.0%
1944 0.332 +0.0%
1945 0.326 -1.8%
1946 0.277 -15.0%
1947 0.159 -42.6%
1948 0.106 -33.3%
1949 0.106 +0.0%
1950 0.095 -10.4%
1951 0.091 -4.2%
1952 0.091 +0.0%
1953 0.091 +0.0%
1954 0.091 +0.0%
1955 0.091 +0.0%
1956 0.091 +0.0%
1957 0.091 +0.0%
1958 0.091 +0.0%
1959 0.091 +0.0%
1960 0.091 +0.0%
1961 0.091 +0.0%
1962 0.091 +0.0%
1963 0.091 +0.0%
1964 0.091 +0.0%
1965 0.091 +0.0%
1966 0.091 +0.0%
1967 0.091 +0.0%
1968 0.091 +0.0%
1969 0.091 +0.0%
1970 0.091 +0.0%
1971 0.091 +0.0%
1972 0.091 +0.0%
1973 0.091 +0.0%
1974 0.091 +0.0%
1975 0.091 +0.0%
1976 0.091 +0.0%
1977 0.091 +0.0%
1978 0.091 +0.0%
1979 0.091 +0.0%
1980 0.091 +0.0%
1981 0.091 +0.0%
1982 0.091 +0.0%
1983 0.091 +0.0%
1984 0.091 +0.0%
1985 0.091 +0.0%
1986 0.091 +0.0%
1987 0.091 +0.0%
1988 0.091 +0.0%
1989 0.091 +0.0%
1990 0.091 +0.0%
1991 0.091 +0.0%
1992 0.091 +0.0%
1993 0.091 +0.0%
1994 0.091 +0.0%
1995 0.091 +0.0%
1996 0.091 +0.0%
1997 0.091 +0.0%
1998 0.091 +0.0%
1999 0.091 +0.0%
2000 0.082 -9.9%
2001 0.082 +0.0%
2002 0.082 +0.0%
2003 0.082 +0.0%
2004 0.082 +0.0%
2005 0.082 +0.0%
2006 0.082 +0.0%
2007 0.082 +0.0%
2008 0.082 +0.0%
2009 0.082 +0.0%
2010 0.082 +0.0%
2011 0.082 +0.0%
2012 0.082 +0.0%
2013 0.082 +0.0%
2014 0.095 +15.9%
2015 0.095 +0.0%
2016 0.095 +0.0%
2017 0.095 +0.0%
2018 0.095 +0.0%
2019 0.095 +0.0%
2020 0.099 +4.2%
2021 0.099 +0.0%
2022 0.099 +0.0%
2023 0.099 +0.0%
2024 0.094 -5.1%
2025 0.094 +0.0%

Japan compared with similar countries

  • Japan's 0.094 is above the median for high income countries, which is 0.09, 1.0× the median. (55 countries reporting)
  • Japan's 0.094 is below the median for East Asia & Pacific, which is 0.267, 35% of the median. (22 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1780s 0.95 0.95 0.95 1
1790s 0.95 0.95 0.95 10
1800s 0.95 0.95 0.95 10
1810s 0.95 0.95 0.95 10
1820s 0.95 0.95 0.95 10
1830s 0.95 0.95 0.95 10
1840s 0.95 0.95 0.95 10
1850s 0.95 0.95 0.95 10
1860s 0.9465 0.914 0.951 10
1870s 0.7163 0.584 0.837 10
1880s 0.5743 0.487 0.584 10
1890s 0.3275 0.327 0.332 10
1900s 0.3324 0.327 0.333 10
1910s 0.3299 0.321 0.336 10
1920s 0.322 0.322 0.322 10
1930s 0.3285 0.322 0.332 10
1940s 0.2634 0.106 0.332 10
1950s 0.0914 0.091 0.095 10
1960s 0.091 0.091 0.091 10
1970s 0.091 0.091 0.091 10
1980s 0.091 0.091 0.091 10
1990s 0.091 0.091 0.091 10
2000s 0.082 0.082 0.082 10
2010s 0.0898 0.082 0.095 10
2020s 0.0973 0.094 0.099 6

Countries ranked near Japan

  1. 140 Belgium 0.103 compare
  2. 140 Israel 0.103 compare
  3. 142 Mauritius 0.1 compare
  4. 144 Vanuatu 0.093 compare
  5. 145 Luxembourg 0.09 compare
  6. 146 Jamaica 0.087 compare

See the full ranking of 176 places →

More reference data data for Japan

All data for Japan →

Frequently asked questions

What is centralization of political power index in Japan?
Centralization of political power index in Japan was 0.094 in 2025, according to V-Dem (2026) – processed by Our World in Data.
What is the highest centralization of political power index recorded in Japan?
The highest recorded value was 0.951 in 1868.
What is the lowest centralization of political power index recorded in Japan?
The lowest recorded value was 0.082 in 2000.
How does Japan rank for centralization of political power index?
Japan ranks 143rd out of 176 countries with data for 2025.
Is centralization of political power index rising or falling in Japan?
Over the last ten years it is down 1.1%. The long-run trend across the full record is volatile.
Where does this Japan data come from?
The figures come from V-Dem (2026) – processed by Our World in Data, published as part of Centralization of Political Power Index. Statizoid updates them automatically from the source API.

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Centralization of Political Power Index in Japan. Statizoid, drawing on V-Dem (2026) – processed by Our World in Data. Retrieved 22 September 2026, from https://reference.statizoid.com/stat/political-centralization-index/japan/

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About this data

Indicator
Centralization of Political Power Index
Source
V-Dem (2026) – processed by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
176 places, 29,802 data points, 1789–2025
Last refreshed

Central estimate of the extent to which the executive is unconstrained by the legislature, judiciary, electoral management body, and other oversight.