| Rank | Flag | Country | Population | Year | |
| 1 |
| China | 1,330,044,544 | 2008 | |
| 2 |
| India | 1,147,995,904 | 2008 | |
| 3 |
| United States | 303,824,640 | 2008 | |
| 4 |
| Indonesia | 237,512,352 | 2008 | |
| 5 |
| Brazil | 196,342,592 | 2008 | |
| 6 |
| Pakistan | 172,800,048 | 2008 | |
| 7 |
| Bangladesh | 153,546,896 | 2008 | |
| 8 |
| Nigeria | 146,255,312 | 2008 | |
| 9 |
| Russia | 140,702,096 | 2008 | |
| 10 |
| Japan | 127,288,416 | 2008 | |
| 11 |
| Mexico | 109,955,400 | 2008 | |
| 12 |
| Philippines | 96,061,680 | 2008 | |
| 13 |
| Vietnam | 86,116,560 | 2008 | |
| 14 |
| Ethiopia | 82,544,840 | 2008 | |
| 15 |
| Germany | 82,369,552 | 2008 | |
| 16 |
| Egypt | 81,713,520 | 2008 | |
| 17 |
| Turkey | 71,892,808 | 2008 | |
| 18 |
| Democratic Republic of the Congo | 66,514,504 | 2008 | |
| 19 |
| Iran | 65,875,224 | 2008 | |
| 20 |
| Thailand | 65,493,296 | 2008 | |
| 21 |
| France | 64,057,792 | 2008 | |
| 22 |
| United Kingdom | 60,943,912 | 2008 | |
| 23 |
| Italy | 58,145,320 | 2008 | |
| 24 |
| South Africa | 48,782,756 | 2008 | |
| 25 |
| South Korea | 48,379,392 | 2008 | |
| 26 |
| Burma | 47,758,180 | 2008 | |
| 27 |
| Ukraine | 45,994,288 | 2008 | |
| 28 |
| Colombia | 45,013,672 | 2008 | |
| 29 |
| Spain | 40,491,052 | 2008 | |
| 30 |
| Argentina | 40,482,000 | 2008 | |
| 31 |
| Sudan | 40,218,456 | 2008 | |
| 32 |
| Tanzania | 40,213,160 | 2008 | |
| 33 |
| Poland | 38,500,696 | 2008 | |
| 34 |
| Kenya | 37,953,840 | 2008 | |
| 35 |
| Morocco | 34,343,220 | 2008 | |
| 36 |
| Algeria | 33,769,668 | 2008 | |
| 37 |
| Canada | 33,212,696 | 2008 | |
| 38 |
| Afghanistan | 32,738,376 | 2008 | |
| 39 |
| Uganda | 31,367,972 | 2008 | |
| 40 |
| Nepal | 29,519,114 | 2008 | |
| 41 |
| Peru | 29,180,900 | 2008 | |
| 42 |
| Iraq | 28,221,180 | 2008 | |
| 43 |
| Saudi Arabia | 28,146,656 | 2008 | |
| 44 |
| Uzbekistan | 27,345,026 | 2008 | |
| 45 |
| Venezuela | 26,414,816 | 2008 | |
| 46 |
| Malaysia | 25,274,132 | 2008 | |
| 47 |
| North Korea | 23,479,088 | 2008 | |
| 48 |
| Ghana | 23,382,848 | 2008 | |
| 49 |
| Yemen | 23,013,376 | 2008 | |
| 50 |
| Taiwan | 22,920,946 | 2008 | |
| 51 |
| Romania | 22,246,862 | 2008 | |
| 52 |
| Mozambique | 21,284,700 | 2008 | |
| 53 |
| Sri Lanka | 21,128,772 | 2008 | |
| 54 |
| Australia | 21,007,310 | 2008 | |
| 55 |
| Cote d'Ivoire | 20,179,602 | 2008 | |
| 56 |
| Madagascar | 20,042,552 | 2008 | |
| 57 |
| Syria | 19,747,586 | 2008 | |
| 58 |
| Cameroon | 18,467,692 | 2008 | |
| 59 |
| Netherlands | 16,645,313 | 2008 | |
| 60 |
| Chile | 16,454,143 | 2008 | |
| 61 |
| Kazakhstan | 15,340,533 | 2008 | |
| 62 |
| Burkina Faso | 15,264,735 | 2008 | |
| 63 |
| Cambodia | 14,241,640 | 2008 | |
| 64 |
| Malawi | 13,931,831 | 2008 | |
| 65 |
| Ecuador | 13,927,650 | 2008 | |
| 66 |
| Niger | 13,272,679 | 2008 | |
| 67 |
| Guatemala | 13,002,206 | 2008 | |
| 68 |
| Senegal | 12,853,259 | 2008 | |
| 69 |
| Angola | 12,531,357 | 2008 | |
| 70 |
| Mali | 12,324,029 | 2008 | |
| 71 |
| Zambia | 11,669,534 | 2008 | |
| 72 |
| Cuba | 11,423,952 | 2008 | |
| 73 |
| Zimbabwe | 11,350,111 | 2008 | |
| 74 |
| Greece | 10,722,816 | 2008 | |
| 75 |
| Portugal | 10,676,910 | 2008 | |
| 76 |
| Belgium | 10,403,951 | 2008 | |
| 77 |
| Tunisia | 10,383,577 | 2008 | |
| 78 |
| Czech Republic | 10,220,911 | 2008 | |
| 79 |
| Rwanda | 10,186,063 | 2008 | |
| 80 |
| Serbia | 10,159,046 | 2008 | |
| 81 |
| Chad | 10,111,337 | 2008 | |
| 82 |
| Hungary | 9,930,915 | 2008 | |
| 83 |
| Guinea | 9,806,509 | 2008 | |
| 84 |
| Belarus | 9,685,768 | 2008 | |
| 85 |
| Somalia | 9,558,666 | 2008 | |
| 86 |
| Dominican Republic | 9,507,133 | 2008 | |
| 87 |
| Bolivia | 9,247,816 | 2008 | |
| 88 |
| Sweden | 9,045,389 | 2008 | |
| 89 |
| Haiti | 8,924,553 | 2008 | |
| 90 |
| Burundi | 8,691,005 | 2008 | |
| 91 |
| Benin | 8,532,547 | 2008 | |
| 92 |
| Austria | 8,205,533 | 2008 | |
| 93 |
| Azerbaijan | 8,177,717 | 2008 | |
| 94 |
| Honduras | 7,639,327 | 2008 | |
| 95 |
| Switzerland | 7,581,520 | 2008 | |
| 96 |
| Bulgaria | 7,262,675 | 2008 | |
| 97 |
| Tajikistan | 7,211,884 | 2008 | |
| 98 |
| Israel | 7,112,359 | 2008 | |
| 99 |
| El Salvador | 7,066,403 | 2008 | |
| 100 |
| Hong Kong | 7,018,636 | 2008 | |