| Code | Country | Variable | www.Worldata.org ® © | Source | Key |
| 1 | Afghanistan | UN Admission | 1946-11-19 | UNH (2002) | 1 |
| 2 | Albania | UN Admission | 1955-12-14 | UNH (2002) | 2 |
| 3 | Algeria | UN Admission | 1962-10-08 | UNH (2002) | 3 |
| 4 | Andorra | UN Admission | 1993-07-28 | UNH (2002) | 4 |
| 5 | Angola | UN Admission | 1976-12-01 | UNH (2002) | 5 |
| 6 | Antigua and Barbuda | UN Admission | 1981-11-11 | UNH (2002) | 6 |
| 7 | Argentina | UN Admission | 1945-10-24 (original member) | UNH (2002) | 7 |
| 8 | Armenia | UN Admission | 1992-03-02 | UNH (2002) | 8 |
| 9 | Australia | UN Admission | 1945-11-01 (original member) | UNH (2002) | 9 |
| 10 | Austria | UN Admission | 1955-12-14 | UNH (2002) | 10 |
| 11 | Azerbaijan | UN Admission | 1992-03-02 | UNH (2002) | 11 |
| 12 | Bahamas | UN Admission | 1973-09-18 | UNH (2002) | 12 |
| 13 | Bahrain | UN Admission | 1971-09-21 | UNH (2002) | 13 |
| 14 | Bangladesh | UN Admission | 1974-09-17 | UNH (2002) | 14 |
| 15 | Barbados | UN Admission | 1966-12-09 | UNH (2002) | 15 |
| 16 | Belarus | UN Admission | 1945-10-24 (original member) | UNH (2002) | 16 |
| 17 | Belgium | UN Admission | 1945-12-27 (original member) | UNH (2002) | 17 |
| 18 | Belize | UN Admission | 1981-09-25 | UNH (2002) | 18 |
| 19 | Benin | UN Admission | 1960-09-20 | UNH (2002) | 19 |
| 20 | Bhutan | UN Admission | 1971-09-21 | UNH (2002) | 20 |
| 21 | Bolivia | UN Admission | 1945-11-14 (original member) | UNH (2002) | 21 |
| 22 | Bosnia and Herzegovina | UN Admission | 1992-05-22 | UNH (2002) | 22 |
| 23 | Botswana | UN Admission | 1966-10-17 | UNH (2002) | 23 |
| 24 | Brazil | UN Admission | 1945-10-24 (original member) | UNH (2002) | 24 |
| 25 | Brunei | UN Admission | 1984-09-21 | UNH (2002) | 25 |
| 26 | Bulgaria | UN Admission | 1955-12-14 | UNH (2002) | 26 |
| 27 | Burkina Faso | UN Admission | 1960-09-20 | UNH (2002) | 27 |
| 28 | Burundi | UN Admission | 1962-09-18 | UNH (2002) | 28 |
| 29 | Cambodia | UN Admission | 1955-12-14 | UNH (2002) | 29 |
| 30 | Cameroon | UN Admission | 1960-09-20 | UNH (2002) | 30 |
| 31 | Canada | UN Admission | 1945-11-09 (original member) | UNH (2002) | 31 |
| 32 | Cape Verde | UN Admission | 1975-09-16 | UNH (2002) | 32 |
| 33 | Central African Republic | UN Admission | 1960-09-20 | UNH (2002) | 33 |
| 34 | Chad | UN Admission | 1960-09-20 | UNH (2002) | 34 |
| 35 | Chile | UN Admission | 1945-10-24 (original member) | UNH (2002) | 35 |
| 36 | China | UN Admission | 1945-10-24 (Taiwan) (original member), 1971-10-25 (China) | UNH (2002) | 36 |
| 37 | Colombia | UN Admission | 1945-11-05 (original member) | UNH (2002) | 37 |
| 38 | Comoros | UN Admission | 1975-11-12 | UNH (2002) | 38 |
| 39 | Congo (Brazzaville) | UN Admission | 1960-09-20 | UNH (2002) | 39 |
| 40 | Congo (Kinshasa) | UN Admission | 1960-09-20 | UNH (2002) | 47 |
| 41 | Costa Rica | UN Admission | 1945-11-02 (original member) | UNH (2002) | 40 |
| 42 | Côte d'Ivoire | UN Admission | 1960-09-20 | UNH (2002) | 41 |
| 43 | Croatia | UN Admission | 1992-05-22 | UNH (2002) | 42 |
| 44 | Cuba | UN Admission | 1945-10-24 (original member) | UNH (2002) | 43 |
| 45 | Cyprus | UN Admission | 1960-09-20 | UNH (2002) | 44 |
| 46 | Czech Republic | UN Admission | 1945-10-24 (Czechoslovakia) (original member), 1993-01-19 (Czech Republic) | UNH (2002) | 45 |
| 47 | Denmark | UN Admission | 1945-10-24 (original member) | UNH (2002) | 48 |
| 48 | Djibouti | UN Admission | 1977-09-20 | UNH (2002) | 49 |
| 49 | Dominica | UN Admission | 1978-12-18 | UNH (2002) | 50 |
| 50 | Dominican Republic | UN Admission | 1945-10-24 (original member) | UNH (2002) | 51 |
| 51 | East Timor | UN Admission | 2002-09-27 (191st member out of 192 sovereign countires) | UN website | na |
| 52 | Ecuador | UN Admission | 1945-12-21 (original member) | UNH (2002) | 52 |
| 53 | Egypt | UN Admission | 1945-10-24 (Egypt) (original member), 1958-02-21 (UAR), 1961-10-13 (Egypt) | UNH (2002) | 53 |
| 54 | El Salvador | UN Admission | 1945-10-24 (original member) | UNH (2002) | 54 |
| 55 | Equatorial Guinea | UN Admission | 1968-11-12 | UNH (2002) | 55 |
| 56 | Eritrea | UN Admission | 1993-05-28 | UNH (2002) | 56 |
| 57 | Estonia | UN Admission | 1991-09-17 | UNH (2002) | 57 |
| 58 | Ethiopia | UN Admission | 1945-11-13 (original member) | UNH (2002) | 58 |
| 59 | Fiji Islands | UN Admission | 1970-10-13 | UNH (2002) | 59 |
| 60 | Finland | UN Admission | 1955-12-14 | UNH (2002) | 60 |
| 61 | France | UN Admission | 1945-10-24 (original member) | UNH (2002) | 61 |
| 62 | Gabon | UN Admission | 1960-09-20 | UNH (2002) | 62 |
| 63 | Gambia | UN Admission | 1965-09-21 | UNH (2002) | 63 |
| 64 | Georgia | UN Admission | 1992-07-31 | UNH (2002) | 64 |
| 65 | Germany | UN Admission | 1973-09-18 (FRG and GDR) 1990-10-03 (Reunification) | UNH (2002) | 65 |
| 66 | Ghana | UN Admission | 1957-03-08 | UNH (2002) | 66 |
| 67 | Greece | UN Admission | 1945-10-25 (original member) | UNH (2002) | 67 |
| 68 | Grenada | UN Admission | 1974-09-17 | UNH (2002) | 68 |
| 69 | Guatemala | UN Admission | 1945-11-21 (original member) | UNH (2002) | 69 |
| 70 | Guinea | UN Admission | 1958-12-12 | UNH (2002) | 70 |
| 71 | Guinea-Bissau | UN Admission | 1974-09-17 | UNH (2002) | 71 |
| 72 | Guyana | UN Admission | 1966-09-20 | UNH (2002) | 72 |
| 73 | Haiti | UN Admission | 1945-10-24 (original member) | UNH (2002) | 73 |
| 74 | Honduras | UN Admission | 1945-12-17 (original member) | UNH (2002) | 74 |
| 75 | Hungary | UN Admission | 1955-12-14 | UNH (2002) | 75 |
| 76 | Iceland | UN Admission | 1946-11-19 | UNH (2002) | 76 |
| 77 | India | UN Admission | 1945-10-30 (original member) | UNH (2002) | 77 |
| 78 | Indonesia | UN Admission | 1950-09-28, 1965-01-20 (Withdrawal), 1966-09-28 (Resuming) | UNH (2002) | 78 |
| 79 | Iran | UN Admission | 1945-10-24 (original member) | UNH (2002) | 79 |
| 80 | Iraq | UN Admission | 1945-12-21 (original member) | UNH (2002) | 80 |
| 81 | Ireland | UN Admission | 1955-12-14 | UNH (2002) | 81 |
| 82 | Israel | UN Admission | 1949-05-11 | UNH (2002) | 82 |
| 83 | Italy | UN Admission | 1955-12-14 | UNH (2002) | 83 |
| 84 | Jamaica | UN Admission | 1962-09-18 | UNH (2002) | 84 |
| 85 | Japan | UN Admission | 1956-12-18 | UNH (2002) | 85 |
| 86 | Jordan | UN Admission | 1955-12-14 | UNH (2002) | 86 |
| 87 | Kazakhstan | UN Admission | 1992-03-02 | UNH (2002) | 87 |
| 88 | Kenya | UN Admission | 1963-12-16 | UNH (2002) | 88 |
| 89 | Kiribati | UN Admission | 1999-09-14 | UNH (2002) | 89 |
| 90 | Korea, North | UN Admission | 1991-09-17 | UNH (2002) | 46 |
| 91 | Korea, South | UN Admission | 1991-09-17 | UNH (2002) | 136 |
| 92 | Kuwait | UN Admission | 1963-05-14 | UNH (2002) | 90 |
| 93 | Kyrgyzstan | UN Admission | 1992-03-02 | UNH (2002) | 91 |
| 94 | Laos | UN Admission | 1955-12-14 | UNH (2002) | 92 |
| 95 | Latvia | UN Admission | 1991-09-17 | UNH (2002) | 93 |
| 96 | Lebanon | UN Admission | 1945-10-24 (original member) | UNH (2002) | 94 |
| 97 | Lesotho | UN Admission | 1966-10-17 | UNH (2002) | 95 |
| 98 | Liberia | UN Admission | 1945-11-02 (original member) | UNH (2002) | 96 |
| 99 | Libya | UN Admission | 1955-12-14 | UNH (2002) | 97 |
| 100 | Liechtenstein | UN Admission | 1990-09-18 | UNH (2002) | 98 |
| 101 | Lithuania | UN Admission | 1991-09-17 | UNH (2002) | 99 |
| 102 | Luxembourg | UN Admission | 1945-10-24 (original member) | UNH (2002) | 100 |
| 103 | Macedonia | UN Admission | 1993-04-08 | UNH (2002) | 166 |
| 104 | Madagascar | UN Admission | 1960-09-20 | UNH (2002) | 101 |
| 105 | Malawi | UN Admission | 1964-12-01 | UNH (2002) | 102 |
| 106 | Malaysia | UN Admission | 1957-09-17 | UNH (2002) | 103 |
| 107 | Maldives | UN Admission | 1965-09-21 | UNH (2002) | 104 |
| 108 | Mali | UN Admission | 1960-09-28 | UNH (2002) | 105 |
| 109 | Malta | UN Admission | 1964-12-01 | UNH (2002) | 106 |
| 110 | Marshall Islands | UN Admission | 1991-09-17 | UNH (2002) | 107 |
| 111 | Mauritania | UN Admission | 1961-10-27 | UNH (2002) | 108 |
| 112 | Mauritius | UN Admission | 1968-04-24 | UNH (2002) | 109 |
| 113 | Mexico | UN Admission | 1945-11-07 (original member) | UNH (2002) | 110 |
| 114 | Micronesia, Federated States of | UN Admission | 1991-09-17 | UNH (2002) | 111 |
| 115 | Moldova | UN Admission | 1992-03-02 | UNH (2002) | 137 |
| 116 | Monaco | UN Admission | 1993-05-28 | UNH (2002) | 112 |
| 117 | Mongolia | UN Admission | 1961-10-27 | UNH (2002) | 113 |
| 118 | Morocco | UN Admission | 1956-11-12 | UNH (2002) | 114 |
| 119 | Mozambique | UN Admission | 1975-09-16 | UNH (2002) | 115 |
| 120 | Myanmar | UN Admission | 1948-04-19 | UNH (2002) | 116 |
| 121 | Namibia | UN Admission | 1990-04-23 | UNH (2002) | 117 |
| 122 | Nauru | UN Admission | 1999-09-14 | UNH (2002) | na |
| 123 | Nepal | UN Admission | 1955-12-14 | UNH (2002) | 118 |
| 124 | Netherlands | UN Admission | 1945-12-10 (original member) | UNH (2002) | 119 |
| 125 | New Zealand | UN Admission | 1945-10-24 (original member) | UNH (2002) | 120 |
| 126 | Nicaragua | UN Admission | 1945-10-24 (original member) | UNH (2002) | 121 |
| 127 | Niger | UN Admission | 1960-09-20 | UNH (2002) | 122 |
| 128 | Nigeria | UN Admission | 1960-10-07 | UNH (2002) | 123 |
| 129 | Norway | UN Admission | 1945-11-27 (original member) | UNH (2002) | 124 |
| 130 | Oman | UN Admission | 1971-10-07 | UNH (2002) | 125 |
| 131 | Pakistan | UN Admission | 1947-09-30 | UNH (2002) | 126 |
| 132 | Palau | UN Admission | 1994-12-15 | UNH (2002) | 127 |
| 133 | Panama | UN Admission | 1945-11-13 (original member) | UNH (2002) | 128 |
| 134 | Papua New Guinea | UN Admission | 1975-10-10 | UNH (2002) | 129 |
| 135 | Paraguay | UN Admission | 1945-10-24 (original member) | UNH (2002) | 130 |
| 136 | Peru | UN Admission | 1945-10-31 (original member) | UNH (2002) | 131 |
| 137 | Philippines | UN Admission | 1945-10-24 (original member) | UNH (2002) | 132 |
| 138 | Poland | UN Admission | 1945-10-24 (original member) | UNH (2002) | 133 |
| 139 | Portugal | UN Admission | 1955-12-14 | UNH (2002) | 134 |
| 140 | Qatar | UN Admission | 1971-09-21 | UNH (2002) | 135 |
| 141 | Romania | UN Admission | 1955-12-14 | UNH (2002) | 138 |
| 142 | Russia | UN Admission | 1945-10-24 (USSR) (original member), 1991-12-24 (Russia) | UNH (2002) | 139 |
| 143 | Rwanda | UN Admission | 1962-09-18 | UNH (2002) | 140 |
| 144 | Saint Kitts and Nevis | UN Admission | 1983-09-23 | UNH (2002) | 141 |
| 145 | Saint Lucia | UN Admission | 1979-09-18 | UNH (2002) | 142 |
| 146 | Saint Vincent and the Grenadines | UN Admission | 1980-09-16 | UNH (2002) | 143 |
| 147 | Samoa | UN Admission | 1976-12-15 | UNH (2002) | 144 |
| 148 | San Marino | UN Admission | 1992-03-02 | UNH (2002) | 145 |
| 149 | Sao Tome and Principe | UN Admission | 1975-09-16 | UNH (2002) | 146 |
| 150 | Saudi Arabia | UN Admission | 1945-10-24 (original member) | UNH (2002) | 147 |
| 151 | Senegal | UN Admission | 1960-09-28 | UNH (2002) | 148 |
| 152 | Seychelles | UN Admission | 1976-09-21 | UNH (2002) | 149 |
| 153 | Sierra Leone | UN Admission | 1961-09-27 | UNH (2002) | 150 |
| 154 | Singapore | UN Admission | 1965-09-21 | UNH (2002) | 151 |
| 155 | Slovakia | UN Admission | 1945-10-24 (Czechoslovakia) (original member), 1993-01-19 (Slovakia) | UNH (2002) | 152 |
| 156 | Slovenia | UN Admission | 1992-05-22 | UNH (2002) | 153 |
| 157 | Solomon Islands | UN Admission | 1978-09-19 | UNH (2002) | 154 |
| 158 | Somalia | UN Admission | 1960-09-20 | UNH (2002) | 155 |
| 159 | South Africa | UN Admission | 1945-11-07 (original member) | UNH (2002) | 156 |
| 160 | Spain | UN Admission | 1955-12-14 | UNH (2002) | 157 |
| 161 | Sri Lanka | UN Admission | 1955-12-14 | UNH (2002) | 158 |
| 162 | Sudan | UN Admission | 1956-11-12 | UNH (2002) | 159 |
| 163 | Suriname | UN Admission | 1975-12-04 | UNH (2002) | 160 |
| 164 | Swaziland | UN Admission | 1968-09-24 | UNH (2002) | 161 |
| 165 | Sweden | UN Admission | 1946-11-19 | UNH (2002) | 162 |
| 166 | Switzerland | UN Admission | 2002-09-10 (190th member out of 192 sovereign countries) | UN website | 189 |
| 167 | Syria | UN Admission | 1945-10-24 (Syria) (original member), 1958-02-21 (UAR), 1961-10-13 (Syria) | UNH (2002) | 163 |
| 168 | Tajikistan | UN Admission | 1992-03-02 | UNH (2002) | 164 |
| 169 | Tanzania | UN Admission | 1961-12-14 (Tanganyika), 1963-12-16 (Zanzibar), 1964-04-26 (Tanzania) | UNH (2002) | 177 |
| 170 | Thailand | UN Admission | 1946-12-16 | UNH (2002) | 165 |
| 171 | Togo | UN Admission | 1960-09-20 | UNH (2002) | 167 |
| 172 | Tonga | UN Admission | 1999-09-14 | UNH (2002) | 168 |
| 173 | Trinidad and Tobago | UN Admission | 1962-09-18 | UNH (2002) | 169 |
| 174 | Tunisia | UN Admission | 1956-11-12 | UNH (2002) | 170 |
| 175 | Turkey | UN Admission | 1945-10-24 (original member) | UNH (2002) | 171 |
| 176 | Turkmenistan | UN Admission | 1992-03-02 | UNH (2002) | 172 |
| 177 | Tuvalu | UN Admission | 2000-09-05 (189th member out of 191 sovereign countries) | UNH (2002) | 190 |
| 178 | Uganda | UN Admission | 1962-10-25 | UNH (2002) | 173 |
| 179 | Ukraine | UN Admission | 1945-10-24 (original member) | UNH (2002) | 174 |
| 180 | United Arab Emirates (UAE) | UN Admission | 1971-12-09 | UNH (2002) | 175 |
| 181 | United Kingdom (UK) | UN Admission | 1945-10-24 (original member) | UNH (2002) | 176 |
| 182 | United States of America (USA) | UN Admission | 1945-10-24 (original member) | UNH (2002) | 178 |
| 183 | Uruguay | UN Admission | 1945-12-18 (original member) | UNH (2002) | 179 |
| 184 | Uzbekistan | UN Admission | 1992-03-02 | UNH (2002) | 180 |
| 185 | Vanuatu | UN Admission | 1981-09-15 | UNH (2002) | 181 |
| 186 | Vatican | UN Admission | Not a member | UN website | 188 |
| 187 | Venezuela | UN Admission | 1945-11-15 (original member) | UNH (2002) | 182 |
| 188 | Vietnam | UN Admission | 1977-09-20 | UNH (2002) | 183 |
| 189 | Yemen | UN Admission | 1947-09-30 (ARY), 1967-12-14 (DY), 1990-05-22 (Yemen) | UNH (2002) | 184 |
| 190 | Yugoslavia | UN Admission | 1945-10-24 (SFRY) (original member), 1992-09-22, 2000-11-01 (FRY) | UNH (2002) | 185 |
| 191 | Zambia | UN Admission | 1964-12-01 | UNH (2002) | 186 |
| 192 | Zimbabwe | UN Admission | 1980-08-25 | UNH (2002) | 187 |
| 193 | World | UN Admission | na | na | 193 |