As of 26 January 2025, there are member states in the United Nations (UN), each of which is a member of the United Nations General Assembly. The following is a list of United Nations member states arranged in chronological order according to their dates of admission (with the United Nations Security Council resolutions that recommended their admission and the United Nations General Assembly resolutions that admitted them, signified with SCR and GAR, respectively), including former members. Members denoted with "→" changed their names, had their memberships in the UN continued by a successor state, merged with other members, or were dissolved.

[Map of the current UN member states by their years of admission {{legend|#5B92E5|1945 (original members)}} {{legend|#008080|1946–1959}} {{legend|#00A24F|1960–1989}} {{legend|#346733|1990–present}} {{legend|#FDE910|non-member observer states|undefined | upload.wikimedia.org/wikipedia/commons/1/15/UN///Member///Countries///World.svg]

Timeline

1940s

1945 (original members)

The UN officially came into existence on 24 October 1945, after ratification of the United Nations Charter by the five permanent members of the United Nations Security Council (China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945. 24 October 1945 25 October 1945 30 October 1945 31 October 1945 1 November 1945 2 November 1945 5 November 1945 7 November 1945 9 November 1945 13 November 1945 14 November 1945 15 November 1945 21 November 1945 27 November 1945 10 December 1945 17 December 1945 18 December 1945 21 December 1945 27 December 1945

1946

19 November 1946 (all by SCR 8 and GAR 34) 16 December 1946

1947

30 September 1947 (all by SCR 29 and GAR 108)

1948

19 April 1948

1949

11 May 1949

1950s

1950

28 September 1950

1955

14 December 1955 (all by SCR 109 and GAR 995)

1956

12 November 1956 18 December 1956

1957

8 March 1957 17 September 1957

1958

22 February 1958 12 December 1958

1960s

1960

20 September 1960 28 September 1960 7 October 1960

1961

27 September 1961 27 October 1961 14 December 1961

1962

18 September 1962 8 October 1962 25 October 1962

1963

14 May 1963 16 December 1963

1964

1 December 1964

1965

20 January 1965 21 September 1965

1966

20 September 1966 28 September 1966 17 October 1966 9 December 1966

1967

14 December 1967

1968

24 April 1968 24 September 1968 12 November 1968

1970s

1970

13 October 1970

1971

21 September 1971 7 October 1971 25 October 1971 9 December 1971

1973

18 September 1973

1974

17 September 1974

1975

16 September 1975 10 October 1975 12 November 1975 4 December 1975

1976

21 September 1976 1 December 1976 15 December 1976

1977

20 September 1977

1978

19 September 1978 18 December 1978

1979

18 September 1979

1980s

1980

25 August 1980 16 September 1980

1981

15 September 1981 25 September 1981 11 November 1981

1983

23 September 1983

1984

21 September 1984

1990s

1990

23 April 1990 18 September 1990

1991

17 September 1991

1992

2 March 1992 22 May 1992 31 July 1992

1993

19 January 1993 8 April 1993 28 May 1993 28 July 1993

1994

15 December 1994

1999

14 September 1999

2000s

2000

5 September 2000 1 November 2000

2002

10 September 2002 27 September 2002

2006

28 June 2006

2010s

2011

14 July 2011

Summary

Below is a summary of the growth in UN membership.