# Blood type distribution by country

This list concerns blood type distribution between countries and regions. Blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.

## ABO and Rh distribution by country

ABO and Rh blood type distribution by country & dependency (population averages) :
| Country/Dependency | Population | O+ | A+ | B+ | AB+ | O− | A− | B− | AB− |
| Albania | 3,074,579 | 34.1% | 31.2% | 14.5% | 5.2% | 6.0% | 5.5% | 2.6% | 0.9% |
| Algeria | 43,576,691 | 40.0% | 30.0% | 15.0% | 4.25% | 6.6% | 2.3% | 1.1% | 0.75% |
| Argentina | 45,479,118 | 50.34% | 31.09% | 8.20% | 2.16% | 4.29% | 2.98% | 0.74% | 0.20% |
| Armenia | 3,021,324 | 29.0% | 46.3% | 12.0% | 5.6% | 2.0% | 3.7% | 1.0% | 0.4% |
| Australia | 25,466,459 | 38.0% | 32.0% | 12.0% | 4.0% | 7.0% | 6.0% | 2.0% | 1.0% |
| Austria | 8,859,449 | 30.0% | 37.0% | 12.0% | 5.0% | 6.0% | 7.0% | 2.0% | 0.45% |
| Azerbaijan | 10,205,810 | 29.8% | 30.0% | 21.1% | 9.0% | 3.3% | 3.4% | 2.4% | 1.0% |
| Bahrain | 1,505,003 | 48.48% | 15.35% | 22.61% | 3.67% | 3.27% | 1.33% | 1.04% | 0.25% |
| Bangladesh | 164,098,818 | 29.21% | 26.3% | 33.12% | 9.59% | 0.53% | 0.48% | 0.6% | 0.17% |
| Belarus | 9,441,842 | 32.3% | 30.6% | 15.3% | 6.8% | 5.7% | 5.4% | 2.7% | 1.2% |
| Belgium | 11,720,716 | 38.0% | 34.0% | 8.5% | 4.0% | 7.0% | 6.0% | 1.5% | 1.0% |
| Bhutan | 857,423 | 38.15% | 29.45% | 23.86% | 8.41% | 0.06% | 0.04% | 0.04% | 0.01% |
| Bolivia | 11,639,909 | 51.53% | 20.45% | 10.11% | 1.15% | 4.39% | 2.73% | 0.54% | 0.1% |
| Bosnia and Herzegovina | 3,835,586 | 31.0% | 36.0% | 12.0% | 6.0% | 5.0% | 7.0% | 2.0% | 1.0% |
| Brazil | 211,715,973 | 36.0% | 34.0% | 8.0% | 2.5% | 9.0% | 8.0% | 2.0% | 0.5% |
| Bulgaria | 6,966,899 | 28.0% | 37.4% | 12.8% | 6.8% | 5.0% | 6.6% | 2.2% | 1.2% |
| Burkina Faso | 21,382,659 | 39.94% | 20.79% | 26.34% | 5.17% | 3.36% | 1.75% | 2.22% | 0.43% |
| Cambodia | 16,926,984 | 46.7% | 27.2% | 18.5% | 4.9% | 1.3% | 0.8% | 0.5% | 0.1% |
| Cameroon | 27,744,989 | 46.83% | 24.15% | 21.06% | 4.29% | 1.79% | 0.92% | 0.8% | 0.16% |
| Canada | 37,694,085 | 39.0% | 36.0% | 7.6% | 2.5% | 7.0% | 6.0% | 1.4% | 0.5% |
| Chile | 18,186,770 | 55.01% | 28.08% | 8.02% | 1.81% | 4.19% | 2.14% | 0.61% | 0.14% |
| Colombia | 49,084,841 | 61.3% | 21.11% | 7.28% | 1.47% | 5.13% | 2.7% | 0.7% | 0.31% |
| Costa Rica | 5,097,988 | 49.7% | 28.5% | 12.4% | 3.0% | 3.4% | 1.9% | 0.9% | 0.2% |
| Croatia | 4,227,746 | 29.0% | 36.0% | 15.0% | 5.0% | 5.0% | 6.0% | 3.0% | 1.0% |
| Cuba | 11,059,062 | 45.8% | 33.5% | 10.2% | 2.9% | 3.6% | 2.8% | 1.0% | 0.2% |
| Cyprus | 1,266,676 | 35.22% | 40.35% | 11.11% | 4.72% | 3.85% | 3.48% | 0.87% | 0.40% |
| Czech Republic | 10,702,498 | 27.0% | 36.0% | 15.0% | 7.0% | 5.0% | 6.0% | 3.0% | 1.0% |
| Democratic Republic of the Congo | 101,780,263 | 59.5% | 21.3% | 15.2% | 2.4% | 1.0% | 0.3% | 0.2% | 0.1% |
| Denmark | 5,869,410 | 35.0% | 37.0% | 8.0% | 4.0% | 6.0% | 7.0% | 2.0% | 1.0% |
| Dominican Republic | 10,499,707 | 47.2% | 26.4% | 16.9% | 2.1% | 3.7% | 2.1% | 1.4% | 0.2% |
| Ecuador | 16,904,867 | 75.0% | 14.0% | 7.1% | 0.5% | 2.38% | 0.7% | 0.3% | 0.02% |
| Egypt | 104,124,440 | 36.44% | 33.94% | 20.96% | 8.65% | n/a | n/a | n/a | n/a |
| El Salvador | 6,481,102 | 62.0% | 23.0% | 11.0% | 1.0% | 1.0% | 1.0% | 0.7% | 0.3% |
| Estonia | 1,228,624 | 29.5% | 30.8% | 20.7% | 6.3% | 4.3% | 4.5% | 3.0% | 0.9% |
| Ethiopia | 108,113,150 | 39.0% | 28.0% | 21.0% | 5.0% | 3.0% | 2.0% | 1.0% | 1.0% |
| Fiji | 935,974 | 43.0% | 33.3% | 16.5% | 4.8% | 1.0% | 0.7% | 0.5% | 0.2% |
| Finland | 5,571,665 | 28.0% | 35.0% | 16.0% | 7.0% | 5.0% | 6.0% | 2.0% | 1.0% |
| France | 67,848,156 | 36.5% | 38.2% | 7.7% | 2.5% | 6.5% | 6.8% | 1.4% | 0.4% |
| Gabon | 2,284,912 | 57.55% | 20.52% | 17.19% | 2.54% | 1.35% | 0.48% | 0.41% | 0.06% |
| Georgia | 4,933,674 | 34.8% | 32.3% | 11.9% | 6.0% | 6.2% | 5.7% | 2.1% | 0.5% |
| Germany | 80,159,662 | 35.0% | 37.0% | 9.0% | 4.0% | 6.0% | 6.0% | 2.0% | 1.0% |
| Ghana | 29,340,248 | 53.8% | 17.6% | 18.3% | 2.8% | 4.5% | 1.3% | 1.3% | 0.2% |
| Greece | 10,607,051 | 37.8% | 32.2% | 11.0% | 4.0% | 6.6% | 5.7% | 2.0% | 0.7% |
| Guinea | 12,527,440 | 46.88% | 21.64% | 22.86% | 4.52% | 2.0% | 0.9% | 1.0% | 0.2% |
| Honduras | 9,235,340 | 57.5% | 25.0% | 7.8% | 2.5% | 2.7% | 1.7% | 0.6% | 0.2% |
| Hong Kong | 7,249,907 | 42.8% | 25.5% | 25.8% | 5.9% | 0.7% | 0.1% | 0.2% | 0.1% |
| Hungary | 9,771,827 | 27.0% | 33.0% | 16.0% | 8.0% | 5.0% | 7.0% | 3.0% | 1.0% |
| Iceland | 350,734 | 46.8% | 27.2% | 9.0% | 2.0% | 8.2% | 4.8% | 1.6% | 0.4% |
| India | 1,339,330,514 | 32.53% | 21.80% | 32.10% | 7.70% | 2.03% | 1.36% | 2.00% | 0.48% |
| Indonesia | 267,026,366 | 36.82% | 25.87% | 28.85% | 7.96% | 0.18% | 0.13% | 0.15% | 0.04% |
| Iran | 84,923,314 | 36.5% | 27.0% | 22.2% | 4.0% | 5.0% | 2.0% | 2.5% | 0.8% |
| Iraq | 38,872,655 | 32.1% | 25.0% | 25.6% | 7.4% | 3.6% | 2.7% | 2.7% | 0.9% |
| Ireland | 5,176,569 | 47.0% | 26.0% | 9.0% | 2.0% | 8.0% | 5.0% | 2.0% | 1.0% |
| Israel | 8,675,475 | 32.0% | 34.0% | 17.0% | 7.0% | 3.0% | 4.0% | 2.0% | 1.0% |
| Italy | 62,402,659 | 39.0% | 36.0% | 7.5% | 2.5% | 7.0% | 6.0% | 1.5% | 0.5% |
| Ivory Coast | 28,088,455 | 47.24% | 20.19% | 21.7% | 3.82% | 3.73% | 1.54% | 1.48% | 0.3% |
| Jamaica | 2,808,570 | 51.1% | 20.0% | 20.0% | 1.9% | 3.5% | 2.0% | 1.0% | 0.5% |
| Japan | 125,507,472 | 29.9% | 39.8% | 19.9% | 9.9% | 0.15% | 0.2% | 0.1% | 0.05% |
| Jordan | 10,909,567 | 33.03% | 32.86% | 16.56% | 6.28% | 4.4% | 3.97% | 2.06% | 0.04% |
| Kazakhstan | 19,091,949 | 30.7% | 29.8% | 24.2% | 8.3% | 2.3% | 2.2% | 1.8% | 0.4% |
| Kenya | 53,527,936 | 45.6% | 25.2% | 21.28% | 4.2% | 1.8% | 1.0% | 0.9% | 0.02% |
| Laos | 7,574,356 | 37.52% | 19.73% | 35.36% | 6.85% | 0.2% | 0.1% | 0.2% | 0.05% |
| Latvia | 1,881,232 | 30.6% | 31.0% | 17.0% | 6.0% | 5.4% | 6.0% | 3.0% | 1.0% |
| Lebanon | 5,469,612 | 38.4% | 32.3% | 9.5% | 3.2% | 7.7% | 6.5% | 1.7% | 0.7% |
| Libya | 6,890,535 | 42.64% | 20.86% | 11.19% | 4.5% | 7.26% | 3.24% | 1.64% | 0.67% |
| Liechtenstein | 39,137 | 34.0% | 37.0% | 10.0% | 4.0% | 6.0% | 6.5% | 1.8% | 0.7% |
| Lithuania | 2,731,464 | 36.0% | 33.0% | 11.0% | 4.0% | 7.0% | 6.0% | 2.0% | 0.7% |
| Luxembourg | 628,381 | 35.0% | 37.0% | 9.0% | 4.0% | 6.0% | 6.0% | 2.0% | 1.0% |
| Macao | 614,458 | 41.5% | 26.1% | 25.4% | 6.3% | 0.33% | 0.09% | 0.17% | 0.05% |
| Malaysia | 32,652,083 | 34.32% | 30.35% | 27.37% | 7.46% | 0.17% | 0.15% | 0.14% | 0.04% |
| Malta | 457,267 | 38.0% | 41.0% | 7.0% | 3.0% | 5.0% | 4.5% | 1.0% | 0.5% |
| Mauritania | 4,005,475 | 46.3% | 26.68% | 17.47% | 3.85% | 2.8% | 1.6% | 1.1% | 0.2% |
| Mauritius | 1,379,365 | 38.3% | 26.0% | 25.0% | 6.7% | 1.7% | 1.0% | 1.0% | 0.3% |
| Mexico | 128,649,565 | 59.09% | 26.23% | 8.53% | 1.73% | 2.73% | 1.21% | 0.40% | 0.08% |
| Moldova | 3,364,496 | 28.5% | 31.8% | 17.6% | 7.0% | 5.0% | 6.0% | 3.0% | 1.1% |
| Mongolia | 3,198,913 | 36.4% | 29.2% | 8.1% | % | 13.3% | 8.0% | 2.0% | 0.01% |
| Morocco | 35,561,654 | 42.3% | 30.8% | 14.0% | 4.0% | 4.5% | 3.1% | 1.5% | 0.4% |
| Myanmar | 56,590,071 | 35.7% | 23.8% | 32.7% | 6.95% | 0.3% | 0.2% | 0.3% | 0.05% |
| Namibia | 2,678,191 | 50.58% | 20.49% | 20.21% | 1.02% | 4.22% | 1.71% | 1.69% | 0.08% |
| Nepal | 30,327,877 | 35.2% | 36.3% | 27.1% | 2.6% | 0.3% | 0.2% | 0.2% | 0.1% |
| Netherlands | 17,280,397 | 38.2% | 36.6% | 7.7% | 2.5% | 6.8% | 6.4% | 1.3% | 0.5% |
| New Zealand | 4,925,477 | 38.0% | 32.0% | 10.0% | 3.0% | 9.0% | 6.0% | 1.0% | <1.0% |
| Nicaragua | 6,243,931 | 62.0% | 20.0% | 11.0% | 4.0% | 1.0% | 1.0% | 0.7% | 0.3% |
| Nigeria | 219,463,862 | 50.23% | 21.61% | 19.59% | 3.47% | 2.7% | 1.16% | 1.05% | 0.19% |
| North Korea | 25,643,466 | 27.15% | 31.08% | 30.15% | 11.32% | 0.08% | 0.1% | 0.1% | 0.03% |
| North Macedonia | 2,125,971 | 30.0% | 34.0% | 15.0% | 6.0% | 5.0% | 6.0% | 3.0% | 1.0% |
| Norway | 5,467,439 | 33.2% | 41.6% | 6.8% | 3.4% | 5.8% | 7.4% | 1.2% | 0.6% |
| Pakistan | 238,181,034 | 30.04% | 21.53% | 30.24% | 8.83% | 3.1% | 2.22% | 3.13% | 0.91% |
| Papua New Guinea | 7,259,456 | 55.7% | 32.2% | 9.6% | 2.1% | 1.8% | 0.5% | 0.2% | 0.1% |
| Paraguay | 7,272,639 | 63.07% | 21.32% | 4.72% | 1.38% | 5.89% | 2.97% | 0.49% | 0.15% |
| Peru | 31,914,989 | 70.0% | 18.4% | 7.8% | 1.6% | 1.4% | 0.5% | 0.28% | 0.02% |
| Philippines | 109,180,815 | 45.9% | 22.9% | 24.9% | 5.97% | 0.1% | 0.1% | 0.1% | 0.03% |
| Poland | 38,282,325 | 31.0% | 32.0% | 15.0% | 7.0% | 6.0% | 6.0% | 2.0% | 1.0% |
| Portugal | 10,302,674 | 36.2% | 39.8% | 6.6% | 2.9% | 6.1% | 6.8% | 1.1% | 0.5% |
| People's Republic of China | 1,397,897,720 | 34.0% | 27.6% | 28.9% | 8.4% | 0.4% | 0.25% | 0.2% | 0.15% |
| Romania | 21,230,362 | 28.0% | 37.0% | 14.0% | 7.0% | 5.0% | 6.0% | 2.0% | 1.0% |
| Russia | 145,478,097 | 36.0% | 31.0% | 19.0% | 2.1% | 6.0% | 4.0% | 1.0% | 0.9% |
| Saudi Arabia | 34,173,498 | 47.8% | 16.0% | 17.9% | 4.0% | 4.0% | 2.0% | 1.0% | 0.3% |
| Serbia | 7,012,165 | 31.92% | 35.28% | 12.6% | 4.2% | 6.08% | 6.72% | 2.4% | 0.8% |
| Singapore | 6,209,660 | 44.7% | 23.9% | 24.5% | 5.6% | 0.6% | 0.3% | 0.3% | 0.1% |
| Slovakia | 5,440,602 | 27.2% | 35.7% | 15.3% | 6.8% | 4.8% | 6.3% | 2.7% | 1.2% |
| Slovenia | 2,102,678 | 31.0% | 33.0% | 12.0% | 6.0% | 7.0% | 7.0% | 3.0% | 1.0% |
| Somalia | 12,094,640 | 52.8% | 19.36% | 12.32% | 3.52% | 7.2% | 2.64% | 1.68% | 0.48% |
| South Africa | 56,463,617 | 39.0% | 32.0% | 12.0% | 3.0% | 6.0% | 5.0% | 2.0% | 1.0% |
| South Korea | 51,835,110 | 29% | 32% | 31% | 8% | 0.19% | 0.1% | 0.1% | 0.01% |
| Sri Lanka | 23,044,123 | 43.42% | 21.0% | 25.78% | 5.13% | 2.12% | 1.04% | 1.25% | 0.26% |
| Spain | 50,015,792 | 35.0% | 36.0% | 8.0% | 2.5% | 9.0% | 7.0% | 2.0% | 0.5% |
| Sudan | 45,561,556 | 48.0% | 27.7% | 15.2% | 2.3% | 3.5% | 1.8% | 0.8% | 0.2% |
| Sweden | 10,202,491 | 32.0% | 37.0% | 10.0% | 5.0% | 6.0% | 7.0% | 2.0% | 1.0% |
| Switzerland | 8,403,994 | 35.0% | 38.0% | 8.0% | 4.0% | 6.9% | 7.0% | 1.0% | 0.1% |
| Syria | 19,398,448 | 43.0% | 30.0% | 14.0% | 3.7% | 5.0% | 3.0% | 1.0% | 0.3% |
| Taiwan | 23,603,049 | 43.9% | 25.9% | 23.9% | 6.0% | 0.28% | 0.01% | 0.01% | 0.01% |
| Thailand | 68,977,400 | 40.8% | 16.9% | 36.8% | 4.97% | 0.2% | 0.1% | 0.2% | 0.03% |
| Tunisia | 11,811,335 | 41.86% | 28.21% | 16.38% | 4.55% | 4.14% | 2.79% | 1.62% | 0.45% |
| Turkey | 82,017,514 | 29.4% | 38.3% | 13.2% | 6.4% | 4.4% | 5.5% | 2.1% | 0.7% |
| Uganda | 44,712,143 | 49.29% | 24.11% | 20.29% | 4.41% | 1.01% | 0.49% | 0.41% | 0.09% |
| Ukraine | 43,922,939 | 32.0% | 34.0% | 15.0% | 5.0% | 5.0% | 6.0% | 2.0% | 1.0% |
| United Arab Emirates | 9,992,083 | 44.1% | 21.9% | 20.9% | 4.3% | 4.3% | 2.1% | 2.0% | 0.4% |
| United Kingdom | 66,971,395 | 36% | 30% | 8% | 2% | 8% | 9% | 2% | 1% |
| United States | 334,998,398 | 37.4% | 35.7% | 8.5% | 3.4% | 6.6% | 4.1% | 1.5% | 0.6% |
| Uzbekistan | 30,842,796 | 29.42% | 30.93% | 24.98% | 9.27% | 1.68% | 1.77% | 1.42% | 0.53% |
| Venezuela | 28,644,603 | 58.3% | 28.2% | 5.6% | 1.9% | 4.0% | 1.5% | 0.4% | 0.1% |
| Vietnam | 98,721,275 | 41.7% | 20.9% | 30.8% | 4.98% | 0.3% | 0.1% | 0.2% | 0.02% |
| Yemen | 29,884,405 | 47.84% | 27.5% | 15.32% | 2.14% | 3.66% | 2.1% | 1.17% | 0.16% |
| Zimbabwe | 14,546,314 | 45.7% | 28.8% | 18.0% | 4.1% | 1.7% | 1.0% | 0.4% | 0.3% |
| World | 7,772,850,805 | 38.4% | 27.3% | 8.1% | 2.0% | 13.1% | 8.1% | 2.0% | 0.01% |
50.0% and above  40.0–49.9%  30.0–39.9%  20.0–29.9%  10.0–19.9%  5.0–9.9%
Ethnic distribution of ABO (without Rh) blood types (This table has more entries than the table above but does not distinguish between Rh types.) :
| People group | O (%) | A (%) | B (%) | AB (%) |
| Australian Aboriginals | 61 | 39 | 0 | 0 |
| Abyssinians | 43 | 27 | 25 | 5 |
| Ainu (Japan) | 17 | 32 | 32 | 18 |
| Albanians | 38 | 43 | 13 | 6 |
| Great Andamanese | 9 | 60 | 20 | 12 |
| Arabs | 34 | 31 | 29 | 6 |
| Armenians | 31 | 50 | 13 | 6 |
| Asian Americans | 40 | 28 | 27 | 5 |
| Austrians | 36 | 44 | 13 | 6 |
| Bantus | 46 | 30 | 19 | 5 |
| Basques | 51 | 44 | 4 | 1 |
| Belgians | 47 | 42 | 8 | 3 |
| Bororo (Brazil) | 100 | 0 | 0 | 0 |
| Brazilians | 47 | 41 | 9 | 3 |
| Bulgarians | 32 | 44 | 15 | 8 |
| Bamar people | 36 | 24 | 33 | 7 |
| Buryats (Siberia) | 33 | 21 | 38 | 8 |
| Bushmen | 56 | 34 | 9 | 2 |
| Chinese-Canton | 47 | 23 | 25 | 4 |
| Chinese-Ningbo | 35 | 32 | 25 | 9 |
| Chinese-Yangzhou | 31 | 32 | 27 | 7 |
| Chinese-Peking | 29 | 27 | 32 | 13 |
| Chuvash | 30 | 29 | 33 | 7 |
| Croats | 34 | 42 | 17 | 7 |
| Czechs | 30 | 44 | 18 | 9 |
| Danes | 41 | 44 | 11 | 4 |
| Dutch | 45 | 43 | 9 | 3 |
| Egyptians | 33 | 36 | 24 | 8 |
| English | 47 | 41 | 9 | 3 |
| Inuit (Alaska) | 38 | 44 | 13 | 5 |
| Inuit (Greenland) | 57 | 36 | 23 | 5 |
| Estonians | 34 | 36 | 23 | 8 |
| Fijians | 44 | 34 | 17 | 6 |
| Finns | 34 | 41 | 18 | 7 |
| French | 43 | 47 | 7 | 3 |
| Georgians | 46 | 37 | 12 | 4 |
| Germans | 41 | 43 | 11 | 5 |
| Greeks | 44 | 38 | 14 | 5 |
| Romani people (Hungary) | 29 | 27 | 35 | 10 |
| Hawaiians | 37 | 61 | 2 | 1 |
| Hindus (Bombay) | 32 | 29 | 28 | 11 |
| Hungarians | 36 | 43 | 19 | 8 |
| Icelanders | 56 | 32 | 10 | 3 |
| Indians (India) | 37 | 22 | 33 | 7 |
| Native Americans (US) | 79 | 16 | 4 | 1 |
| Irish | 52 | 35 | 10 | 1 |
| Italians (Milan) | 46 | 41 | 11 | 3 |
| Japanese | 30 | 38 | 22 | 10 |
| Jews (Germany) | 42 | 41 | 12 | 5 |
| Jews (Poland) | 33 | 41 | 18 | 8 |
| Kalmyks | 26 | 23 | 41 | 11 |
| Kikuyu (Kenya) | 60 | 19 | 20 | 1 |
| Koreans | 28 | 32 | 31 | 9 |
| Sami people | 29 | 63 | 4 | 4 |
| Latvians | 32 | 37 | 24 | 7 |
| Lithuanians | 40 | 34 | 20 | 6 |
| Malays | 62 | 18 | 20 | 0 |
| Māori | 46 | 54 | 1 | 0 |
| Mayans | 98 | 1 | 1 | 1 |
| Moros | 64 | 16 | 20 | 0 |
| Navajo Indians | 73 | 27 | 0 | 0 |
| Nicobarese | 74 | 9 | 15 | 1 |
| Norwegians | 39 | 50 | 8 | 4 |
| Papuans (New Guinea) | 41 | 27 | 23 | 9 |
| Persians | 38 | 33 | 22 | 7 |
| Peruvian Indians | 100 | 0 | 0 | 0 |
| Filipinos | 45 | 22 | 27 | 6 |
| Poles | 33 | 39 | 20 | 9 |
| Portuguese | 35 | 53 | 8 | 4 |
| Romanians | 33 | 43 | 16 | 8 |
| Russians | 33 | 36 | 23 | 8 |
| Sardinians | 50 | 26 | 19 | 5 |
| Scots | 51 | 34 | 12 | 3 |
| Serbs | 38 | 42 | 16 | 5 |
| Shompen Nicobarese | 100 | 0 | 0 | 0 |
| Slovaks | 37 | 42 | 16 | 5 |
| South Africans | 45 | 40 | 11 | 4 |
| Spanish | 38 | 47 | 10 | 5 |
| Sudanese | 62 | 16 | 21 | 0 |
| Swedish | 36 | 45 | 12 | 7 |
| Swiss | 38 | 50 | 9 | 3 |
| Tatars | 28 | 30 | 29 | 13 |
| Thais | 32 | 21 | 36 | 9 |
| Turks | 43 | 33 | 19 | 6 |
| Ukrainians | 37 | 40 | 18 | 6 |
| African Americans | 49 | 27 | 20 | 4 |
| White Americans | 45 | 40 | 11 | 4 |
| Vietnamese | 42 | 22 | 30 | 5 |
Blood group B has its highest frequency in the Middle East, where it ranks as the largest share of the population. In Southeast Asia its share of the population is lowest, especially in Indonesia, secondarily in East Asia, Northern Asia and neighboring Central Asia, and its incidence diminishes both towards the east and the west, falling to single-digit percentages in Netherlands, Norway, Portugal and Switzerland. It is believed to have been entirely absent from Native American and Australian Aboriginal populations prior to the arrival of Europeans in those areas.
Blood group A is associated with high frequencies in Europe, especially in Scandinavia and Central Europe, although its highest frequencies occur in some Australian Aboriginal populations and the Blackfoot Indians of Montana, US.

## Maps of ABO alleles among native populations

In the ABO blood group system, there are three alleles: i, I$^A$, and I$^B$. As both I$^A$ and I$^B$ are dominant over i, only ii people have type O blood. Individuals with I$^A$I$^A$ or I$^A$i have type A blood, and individuals with I$^B$I$^B$ or I$^B$i have type B. Those with I$^A$I$^B$ have type AB.
* Map of allele I$^A$ among native populations
* Map of allele I$^B$ among native populations
* Map of blood group O among native populations