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Political centralization index in Tanzania

Tanzania: Political centralization index was 0.24 in 2025. ◆ Volatile

Latest (2025)
0.24
Change on year
up 46.3%
World rank
105th
of 176 countries
All-time high
0.661
in 1926
All-time low
0.164
in 2024
Years of data
112
1914–2025

Political centralization index in Tanzania, 1914–2025

0.20.30.40.50.60.7191419692025

Source: Our World in Data.

Analysis

Tanzania recorded 0.24 for political centralization index in 2025.

Compared with earlier readings it is up 46.3% on the previous year and up 32.6% over ten years.

Over the whole period, political centralization index in Tanzania peaked at 0.661 in 1926 and was at its lowest, 0.164, in 2024.

That places Tanzania 105th out of 176 countries with data for 2025, putting it in the middle of the range.

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

Political centralization index in Tanzania, year by year

Year Value Change
1914 0.638 —
1915 0.638 +0.0%
1916 0.638 +0.0%
1917 0.638 +0.0%
1918 0.638 +0.0%
1919 0.638 +0.0%
1920 0.638 +0.0%
1921 0.638 +0.0%
1922 0.638 +0.0%
1923 0.638 +0.0%
1924 0.638 +0.0%
1925 0.638 +0.0%
1926 0.661 +3.6%
1927 0.573 -13.3%
1928 0.573 +0.0%
1929 0.573 +0.0%
1930 0.573 +0.0%
1931 0.573 +0.0%
1932 0.573 +0.0%
1933 0.573 +0.0%
1934 0.573 +0.0%
1935 0.573 +0.0%
1936 0.573 +0.0%
1937 0.573 +0.0%
1938 0.573 +0.0%
1939 0.573 +0.0%
1940 0.573 +0.0%
1941 0.573 +0.0%
1942 0.573 +0.0%
1943 0.573 +0.0%
1944 0.573 +0.0%
1945 0.573 +0.0%
1946 0.573 +0.0%
1947 0.573 +0.0%
1948 0.573 +0.0%
1949 0.573 +0.0%
1950 0.573 +0.0%
1951 0.573 +0.0%
1952 0.573 +0.0%
1953 0.569 -0.7%
1954 0.569 +0.0%
1955 0.569 +0.0%
1956 0.569 +0.0%
1957 0.569 +0.0%
1958 0.569 +0.0%
1959 0.569 +0.0%
1960 0.546 -4.0%
1961 0.323 -40.8%
1962 0.186 -42.4%
1963 0.186 +0.0%
1964 0.186 +0.0%
1965 0.223 +19.9%
1966 0.223 +0.0%
1967 0.223 +0.0%
1968 0.223 +0.0%
1969 0.223 +0.0%
1970 0.215 -3.6%
1971 0.215 +0.0%
1972 0.215 +0.0%
1973 0.215 +0.0%
1974 0.215 +0.0%
1975 0.215 +0.0%
1976 0.215 +0.0%
1977 0.215 +0.0%
1978 0.215 +0.0%
1979 0.215 +0.0%
1980 0.215 +0.0%
1981 0.215 +0.0%
1982 0.215 +0.0%
1983 0.215 +0.0%
1984 0.215 +0.0%
1985 0.226 +5.1%
1986 0.223 -1.3%
1987 0.223 +0.0%
1988 0.223 +0.0%
1989 0.223 +0.0%
1990 0.223 +0.0%
1991 0.223 +0.0%
1992 0.223 +0.0%
1993 0.225 +0.9%
1994 0.199 -11.6%
1995 0.197 -1.0%
1996 0.19 -3.6%
1997 0.19 +0.0%
1998 0.19 +0.0%
1999 0.19 +0.0%
2000 0.19 +0.0%
2001 0.19 +0.0%
2002 0.19 +0.0%
2003 0.19 +0.0%
2004 0.19 +0.0%
2005 0.196 +3.2%
2006 0.186 -5.1%
2007 0.186 +0.0%
2008 0.186 +0.0%
2009 0.186 +0.0%
2010 0.193 +3.8%
2011 0.193 +0.0%
2012 0.189 -2.1%
2013 0.195 +3.2%
2014 0.195 +0.0%
2015 0.181 -7.2%
2016 0.168 -7.2%
2017 0.172 +2.4%
2018 0.23 +33.7%
2019 0.218 -5.2%
2020 0.179 -17.9%
2021 0.175 -2.2%
2022 0.198 +13.1%
2023 0.182 -8.1%
2024 0.164 -9.9%
2025 0.24 +46.3%

Tanzania compared with similar countries

  • Tanzania's 0.24 is below the median for lower middle income countries, which is 0.5475, 44% of the median. (46 countries reporting)
  • Tanzania's 0.24 is below the median for Sub-Saharan Africa, which is 0.683, 35% of the median. (48 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1910s 0.638 0.638 0.638 6
1920s 0.6208 0.573 0.661 10
1930s 0.573 0.573 0.573 10
1940s 0.573 0.573 0.573 10
1950s 0.5702 0.569 0.573 10
1960s 0.2542 0.186 0.546 10
1970s 0.215 0.215 0.215 10
1980s 0.2193 0.215 0.226 10
1990s 0.205 0.19 0.225 10
2000s 0.189 0.186 0.196 10
2010s 0.1934 0.168 0.23 10
2020s 0.1897 0.164 0.24 6

Countries ranked near Tanzania

  1. 102 Mongolia 0.247 compare
  2. 103 Thailand 0.243 compare
  3. 104 Zambia 0.242 compare
  4. 106 Honduras 0.236 compare
  5. 107 Jordan 0.227 compare
  6. 107 Sao Tome and Principe 0.227 compare

See the full ranking of 176 places →

More reference data data for Tanzania

All data for Tanzania →

Frequently asked questions

What is political centralization index in Tanzania?
Political centralization index in Tanzania was 0.24 in 2025, according to Our World in Data.
What is the highest political centralization index recorded in Tanzania?
The highest recorded value was 0.661 in 1926.
What is the lowest political centralization index recorded in Tanzania?
The lowest recorded value was 0.164 in 2024.
How does Tanzania rank for political centralization index?
Tanzania ranks 105th out of 176 countries with data for 2025.
Is political centralization index rising or falling in Tanzania?
Over the last ten years it is up 32.6%. The long-run trend across the full record is volatile.
Where does this Tanzania data come from?
The figures come from Our World in Data, published as part of Political centralization index. Statizoid updates them automatically from the source API.

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CSV · JSON — 112 observations, free to reuse under CC BY 4.0 (Our World in Data).

Relationships involving this indicator

Comparisons with other indicators across countries. Each was re-measured with population and national income held constant, so a relationship that only reflected country size is not listed here.

All correlations →

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Political centralization index in Tanzania. Statizoid, drawing on Our World in Data. Retrieved 14 November 2026, from https://reference.statizoid.com/stat/political-centralization-index/tanzania/

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About this data

Indicator
Political centralization index
Source
Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
176 places, 29,802 data points, 1789–2025
Last refreshed