Enlargement of the United Nations

As of, there are member states in the United Nations, 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, 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.

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 and a majority of the other signatories. A total of 51 original 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

/
Belarus '
///China and on Taiwan
/ Cuba' → dissolved
//
/ →
/
Dominion of New Zealand →
/
////
→ → → →
→ → →
// →
First Syrian Republic → Second Syrian Republic → '
Ukraine '
'//
→ → → dissolved

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

→ Derg → People's Democratic Republic of Ethiopia → Transitional Government of Ethiopia → /

14 November 1945

Republic of Bolivia →

15 November 1945

/ Republic of Venezuela → /

21 November 1945
27 November 1945
10 December 1945
17 December 1945

18 December 1945
21 December 1945

/
Kingdom of Iraq → / Iraqi Republic → / Ba'athist Iraq → //

27 December 1945
*

1946

19 November 1946

→ → /Democratic Republic of Afghanistan → Islamic State of Afghanistan → /

16 December 1946

1947

30 September 1947

Dominion of Pakistan →
→ → ''''

1948

19 April 1948

Union of Burma → Socialist Republic of the Union of Burma → Union of Myanmar →

1949

11 May 1949
*

1950s

1950

28 September 1950
*

1955

14 December 1955

→ /
// →
Cambodia → → → → →
/ →
/ →
//
→
→ / Libyan Arab Republic → →
→
→
→ →
→ //

1956

12 November 1956

Sudan →

18 December 1956

1957

8 March 1957

Dominion of Ghana → //

17 September 1957

1958

22 February 1958

and merge to become the

12 December 1958
*

1960s

1960

20 September 1960

→ → United Republic of Cameroon →
→
// → → //
→ People's Republic of Benin →
→
→
→ →
→ →
/

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

Sultanate of Zanzibar → / People's Republic of Zanzibar → merged with

1964

1 December 1964

1965

20 January 1965

withdraws from the United Nations

21 September 1965
*

1966

20 September 1966
28 September 1966

rejoins the United Nations

17 October 1966

9 December 1966
*

1967

14 December 1967

→ ''merged with ''

1968

24 April 1968
24 September 1968

12 November 1968
*

1970s

1970

13 October 1970

Dominion of Fiji →

1971

21 September 1971

7 October 1971

25 October 1971

China's seat at the United Nations transferred from the Republic of China to the People's Republic of China.

9 December 1971
*

1973

18 September 1973

→
→ acceded to

1974

17 September 1974
*

1975

16 September 1975

/
// People's Republic of Mozambique →

10 October 1975
12 November 1975

→ // →

4 December 1975
*

1976

21 September 1976

1 December 1976

People's Republic of Angola →

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

Republic of Bosnia and Herzegovina → /

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.

Year	# of admissions	# of members
1945	51	51
1946	4	55
1947	2	57
1948	1	58
1949	1	59
1950	1	60
1951–1954	0	60
1955	16	76
1956	4	80
1957	2	82
1958	1	82
1959	0	82
1960	17	99
1961	4	104
1962	6	110
1963	3	113
1964	3	115
1965	3	117
1966	4	122
1967	1	123
1968	3	126
1969	0	126
1970	1	127
1971	5	132
1972	0	132
1973	3	135
1974	3	138
1975	6	144
1976	3	147
1977	2	149
1978	2	151
1979	1	152
1980	2	154
1981	3	157
1982	0	157
1983	1	158
1984	1	159
1985–1989	0	159
1990	2	159
1991	7	166
1992	13	179
1993	6	184
1994	1	185
1995–1998	0	185
1999	3	188
2000	2	189
2001	0	189
2002	2	191
2003–2005	0	191
2006	1	192
2007–2010	0	192
2011	1	193
2012–present	0	193