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Blood Types and the Population. O positive is the most common blood type. Not all ethnic groups have the same mix of these blood types. Hispanic people, for example, have a relatively high number of Oâs, while Asian people have a relatively high number of Bâs. The mix of the different blood types in the U.S. population is:
Answer: The approximate distribution of blood types in the U.S. population is as follows: 1  O-positive: 38 percent. 2  O-negative: 7 percent. 3  A-positive: 34 percent. 4  A-negative: 6 percent. 5  B-positive: 9 percent. 6  B-negative: 2 percent. 7  AB-positive: 3 percent.ype AB-positive blood is called the universal recipient type because a person who has it can receive blood of any type. People over age 69 receive half of all transfusions of whole blood and red blood cells, according to the National Blood Data Resource Center (NBDRC).