Among the 7.9 billion people living in the world, spread across 195 countries and 7 continents, the most common blood type is O+ with over 39% of the global population. In contrast, the rarest blood type is AB-, with only 0.4% of the population having this special blood type.
Blood Type Distribution by Region
Asia
While O+ remains the most common blood type here, blood type B is also relatively prevalent. Nearly 20% of the population in China has this blood type, and it is also quite common in India and other Central Asian countries.
Similarly, in some West Asian countries like Armenia and Azerbaijan, the population with blood type A+ is higher than in any other country.
Americas
Blood type O+ is the most common blood type globally and is carried by nearly 70% of South Americans. It is also the most prevalent blood type in Canada and the United States.
Africa
O+ is a strong blood type classification among African countries. Nations such as Ghana, Libya, Congo, and Egypt have more individuals with blood type O than AB+.
Europe
Blood type A is common in Europe. Nearly 40% of people in Denmark, Norway, Austria, and Ukraine have this blood type.
Oceania
O+ and A+ are the dominant blood types in Oceania, with Fiji being the only country that has a significant population with blood type B+.
Middle East
Over 41% of the population has blood type O+, with Lebanon being the only country where the majority has blood types O and A.
Caribbean
Nearly half of the people in Caribbean countries have blood type O+, although Jamaica has blood type B+ as the most common.
