| Country | Logo or Flag | Entered Space | Off-Earth Population | Space Stations | Moon Bases | Interplanetary travel | Interplanetary bases | Notes |
|---|---|---|---|---|---|---|---|---|
| United States of America |  |
1961 | 1,200,000 (est 2012) | yes | yes | yes | yes | |
| Union of Soviet Socialist Republics |  |
1961 | 550,000 (est 2011) | yes | yes | yes | yes | |
| Japan |  |
1987 | 350,000 (est 2012) | yes | yes | yes | yes | |
| Commonwealth Nation |   |
1990 | 345,000 (est 2011) | yes | yes | yes | yes | Britain, Canada, Australia, |
| European Union |   |
1978 | 335,900 (est 2012) | yes | yes | yes | yes | |
| German Democratic Republic |   |
1986 | N/A | yes | no | no | no |
Interplanetary with FRG |
| Federal Republic of Germany (FRG) |   |
1986 | N/A | yes | yes | yes | yes | |
| Eastern European Union | 1987 | 69,000 (est 2010) | yes | yes | no | yes | Interplanetary with Soviet Union | |
| People's Republic of China |   |
1987 | 28,000 (est 2011) | yes | no | no | no |
under UN occupation due to crisis |
| Union of South China and Taiwan |   |
1987 | 25,000 (est 2012) | yes | yes | no | no | |
| Republic of Vietnam |   |
1987 | 20,000 (est 2012) | yes | yes | yes | no | |
| Federative Republic of Brazil |   |
1989 | 19,500 (est 2010) | yes | yes | no | yes | Interplanetary with Japan |
| Republic of Iran |   |
1998 | 10,500 (est 2012) | yes | yes | no | no | |
| Republic of Turkey |   |
2009 | 8000 (est 2010) | yes | yes | no | no | Date is for Luna base |
| United Mexico States |   |
2007 | 7500 (est 2012) | yes | yes | no | no | Date is for luna base |
| Republic of India |   |
1990 | 5000 (est 2012) | yes | yes | yes | no | |
| Others | N/A | 55,000 (est 2012) | yes | yes | no | yes | Interplanetary with help |
United Nations building