What Are the Blood Types From the Most Common to Rare?

What Are the Blood Types From the Most Common to Rare?

Blood types from the most common to rare are O +, A +, B +, O -, A -, AB +, B - and AB -. Each type is determined by the presence or absence of certain antigens on the surface of the blood cells.

Although O + is the most common blood type in the United States, the percentage of people with this blood type varies by ethnicity. For example, 37% of Caucasians are blood type O +, while African Americans account for 47%, Hispanics account for 53% and 39% of Asians have this blood type. On the opposite end, the population of AB - blood types is Caucasians at 1%, African Americans at 0.3%, Hispanics at 0.2% and Asians at 0.1%.