States involved in wars in United States
United States: States involved in wars was 1 in 2011. ◆ Volatile
Latest (2011)
1
World rank
1st
of 193 countries
All-time high
1
in 1846
All-time low
0
in 1816
Years of data
196
1816–2011
States involved in wars in United States, 1816–2011
Source: Jason Lyall, Project Mars (2020) – with major processing by Our World in Data.
Analysis
United States recorded 1 for states involved in wars in 2011. That is the highest value across all 196 years on record.
The figure is unchanged over ten years.
Over the whole period, states involved in wars in United States peaked at 1 in 1846 and was at its lowest, 0, in 1816.
That places United States 1st out of 193 countries with data for 2011, putting it in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
States involved in wars in United States, year by year
| Year | Value | Change |
|---|---|---|
| 1816 | 0 | — |
| 1817 | 0 | — |
| 1818 | 0 | — |
| 1819 | 0 | — |
| 1820 | 0 | — |
| 1821 | 0 | — |
| 1822 | 0 | — |
| 1823 | 0 | — |
| 1824 | 0 | — |
| 1825 | 0 | — |
| 1826 | 0 | — |
| 1827 | 0 | — |
| 1828 | 0 | — |
| 1829 | 0 | — |
| 1830 | 0 | — |
| 1831 | 0 | — |
| 1832 | 0 | — |
| 1833 | 0 | — |
| 1834 | 0 | — |
| 1835 | 0 | — |
| 1836 | 0 | — |
| 1837 | 0 | — |
| 1838 | 0 | — |
| 1839 | 0 | — |
| 1840 | 0 | — |
| 1841 | 0 | — |
| 1842 | 0 | — |
| 1843 | 0 | — |
| 1844 | 0 | — |
| 1845 | 0 | — |
| 1846 | 1 | — |
| 1847 | 1 | +0.0% |
| 1848 | 0 | -100.0% |
| 1849 | 0 | — |
| 1850 | 0 | — |
| 1851 | 0 | — |
| 1852 | 0 | — |
| 1853 | 0 | — |
| 1854 | 0 | — |
| 1855 | 0 | — |
| 1856 | 0 | — |
| 1857 | 0 | — |
| 1858 | 0 | — |
| 1859 | 0 | — |
| 1860 | 0 | — |
| 1861 | 1 | — |
| 1862 | 1 | +0.0% |
| 1863 | 1 | +0.0% |
| 1864 | 1 | +0.0% |
| 1865 | 1 | +0.0% |
| 1866 | 0 | -100.0% |
| 1867 | 0 | — |
| 1868 | 0 | — |
| 1869 | 0 | — |
| 1870 | 0 | — |
| 1871 | 0 | — |
| 1872 | 0 | — |
| 1873 | 0 | — |
| 1874 | 0 | — |
| 1875 | 0 | — |
| 1876 | 0 | — |
| 1877 | 0 | — |
| 1878 | 0 | — |
| 1879 | 0 | — |
| 1880 | 0 | — |
| 1881 | 0 | — |
| 1882 | 0 | — |
| 1883 | 0 | — |
| 1884 | 0 | — |
| 1885 | 0 | — |
| 1886 | 0 | — |
| 1887 | 0 | — |
| 1888 | 0 | — |
| 1889 | 0 | — |
| 1890 | 0 | — |
| 1891 | 0 | — |
| 1892 | 0 | — |
| 1893 | 0 | — |
| 1894 | 0 | — |
| 1895 | 0 | — |
| 1896 | 0 | — |
| 1897 | 0 | — |
| 1898 | 1 | — |
| 1899 | 0 | -100.0% |
| 1900 | 1 | — |
| 1901 | 1 | +0.0% |
| 1902 | 0 | -100.0% |
| 1903 | 0 | — |
| 1904 | 0 | — |
| 1905 | 0 | — |
| 1906 | 0 | — |
| 1907 | 0 | — |
| 1908 | 0 | — |
| 1909 | 0 | — |
| 1910 | 0 | — |
| 1911 | 0 | — |
| 1912 | 0 | — |
| 1913 | 0 | — |
| 1914 | 0 | — |
| 1915 | 0 | — |
| 1916 | 0 | — |
| 1917 | 0 | — |
| 1918 | 1 | — |
| 1919 | 1 | +0.0% |
| 1920 | 0 | -100.0% |
| 1921 | 0 | — |
| 1922 | 0 | — |
| 1923 | 0 | — |
| 1924 | 0 | — |
| 1925 | 0 | — |
| 1926 | 0 | — |
| 1927 | 0 | — |
| 1928 | 0 | — |
| 1929 | 0 | — |
| 1930 | 0 | — |
| 1931 | 0 | — |
| 1932 | 0 | — |
| 1933 | 0 | — |
| 1934 | 0 | — |
| 1935 | 0 | — |
| 1936 | 0 | — |
| 1937 | 0 | — |
| 1938 | 0 | — |
| 1939 | 0 | — |
| 1940 | 0 | — |
| 1941 | 1 | — |
| 1942 | 1 | +0.0% |
| 1943 | 1 | +0.0% |
| 1944 | 1 | +0.0% |
| 1945 | 1 | +0.0% |
| 1946 | 0 | -100.0% |
| 1947 | 0 | — |
| 1948 | 0 | — |
| 1949 | 0 | — |
| 1950 | 1 | — |
| 1951 | 1 | +0.0% |
| 1952 | 1 | +0.0% |
| 1953 | 1 | +0.0% |
| 1954 | 0 | -100.0% |
| 1955 | 0 | — |
| 1956 | 0 | — |
| 1957 | 0 | — |
| 1958 | 0 | — |
| 1959 | 0 | — |
| 1960 | 0 | — |
| 1961 | 0 | — |
| 1962 | 0 | — |
| 1963 | 0 | — |
| 1964 | 1 | — |
| 1965 | 1 | +0.0% |
| 1966 | 1 | +0.0% |
| 1967 | 1 | +0.0% |
| 1968 | 1 | +0.0% |
| 1969 | 1 | +0.0% |
| 1970 | 1 | +0.0% |
| 1971 | 1 | +0.0% |
| 1972 | 1 | +0.0% |
| 1973 | 1 | +0.0% |
| 1974 | 0 | -100.0% |
| 1975 | 0 | — |
| 1976 | 0 | — |
| 1977 | 0 | — |
| 1978 | 0 | — |
| 1979 | 0 | — |
| 1980 | 0 | — |
| 1981 | 0 | — |
| 1982 | 1 | — |
| 1983 | 1 | +0.0% |
| 1984 | 1 | +0.0% |
| 1985 | 0 | -100.0% |
| 1986 | 0 | — |
| 1987 | 0 | — |
| 1988 | 0 | — |
| 1989 | 0 | — |
| 1990 | 0 | — |
| 1991 | 1 | — |
| 1992 | 0 | -100.0% |
| 1993 | 0 | — |
| 1994 | 0 | — |
| 1995 | 0 | — |
| 1996 | 0 | — |
| 1997 | 0 | — |
| 1998 | 0 | — |
| 1999 | 1 | — |
| 2000 | 0 | -100.0% |
| 2001 | 1 | — |
| 2002 | 1 | +0.0% |
| 2003 | 1 | +0.0% |
| 2004 | 0 | -100.0% |
| 2005 | 0 | — |
| 2006 | 0 | — |
| 2007 | 0 | — |
| 2008 | 0 | — |
| 2009 | 0 | — |
| 2010 | 0 | — |
| 2011 | 1 | — |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1810s | 0 | 0 | 0 | 4 |
| 1820s | 0 | 0 | 0 | 10 |
| 1830s | 0 | 0 | 0 | 10 |
| 1840s | 0.2 | 0 | 1 | 10 |
| 1850s | 0 | 0 | 0 | 10 |
| 1860s | 0.5 | 0 | 1 | 10 |
| 1870s | 0 | 0 | 0 | 10 |
| 1880s | 0 | 0 | 0 | 10 |
| 1890s | 0.1 | 0 | 1 | 10 |
| 1900s | 0.2 | 0 | 1 | 10 |
| 1910s | 0.2 | 0 | 1 | 10 |
| 1920s | 0 | 0 | 0 | 10 |
| 1930s | 0 | 0 | 0 | 10 |
| 1940s | 0.5 | 0 | 1 | 10 |
| 1950s | 0.4 | 0 | 1 | 10 |
| 1960s | 0.6 | 0 | 1 | 10 |
| 1970s | 0.4 | 0 | 1 | 10 |
| 1980s | 0.3 | 0 | 1 | 10 |
| 1990s | 0.2 | 0 | 1 | 10 |
| 2000s | 0.3 | 0 | 1 | 10 |
| 2010s | 0.5 | 0 | 1 | 2 |
Countries ranked near United States
More social development data for United States
- Refugees under the mandate of the UNHCR by country or territory of 457,647 (2025)
- Refugees under the mandate of the UNHCR by country or territory of 3,667 (2025)
- Political Rights Rating 2 (2025)
- Electoral democracy 1 (2025)
- Political rights rating fh, annual growth rate 0 % change on previous year (2025)
- Political rights rating fh, gaps filled 2 (2025)
- Refugees under the mandate of the UNHCR by country or territory of 0 units per person (2025)
- Refugees under the mandate of the UNHCR by country or territory of 3,667 (2025)
- Refugees under the mandate of the UNHCR by country or territory of 0.0013 units per person (2025)
- Refugees under the mandate of the UNHCR by country or territory of 0 units per US$ of GDP (2025)
Frequently asked questions
- What is states involved in wars in United States?
- States involved in wars in United States was 1 in 2011, according to Jason Lyall, Project Mars (2020) – with major processing by Our World in Data.
- What is the highest states involved in wars recorded in United States?
- The highest recorded value was 1 in 1846.
- What is the lowest states involved in wars recorded in United States?
- The lowest recorded value was 0 in 1816.
- How does United States rank for states involved in wars?
- United States ranks 1st out of 193 countries with data for 2011.
- Is states involved in wars rising or falling in United States?
- Over the last ten years it is unchanged. The long-run trend across the full record is volatile.
- Where does this United States data come from?
- The figures come from Jason Lyall, Project Mars (2020) – with major processing by Our World in Data, published as part of States involved in wars. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 196 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
State was a major participant in at least one conventional war that year.