| Population, Distribution by Sex and Citizenship | ||||
| Nationality | Number of Population | |||
| Female | Male | Total | Percent | |
| Laotian | 2 811 990 | 2 789 621 | 5 601 611 | 99.64 |
| Cambodian | 471 | 508 | 979 | 0.02 |
| Chinese | 780 | 1 045 | 1 825 | 0.03 |
| Burmese | 73 | 81 | 154 | 0.00 |
| Thai | 372 | 614 | 986 | 0.02 |
| Vietnamese | 4 473 | 4 322 | 8 795 | 0.16 |
| Other Asian Citizens | 50 | 77 | 127 | 0.00 |
| European | 78 | 113 | 191 | 0.00 |
| African | 9 | 10 | 19 | 0.00 |
| American | 175 | 226 | 401 | 0.01 |
| Australian | 8 | 8 | 16 | 0.00 |
| Other Citizens | 42 | 42 | 84 | 0.00 |
| Not stated | 2 910 | 3 884 | 6 794 | 0.12 |
| Total | 2 821 431 | 2 800 551 | 5 621 982 | 100.00 |
| Source : Results from the Population and Housing Census 2005, NSC,CPI | ||||