Human Body

Blood and Circulation

Which of the major blood types are the most common in the United States?

The following table lists the blood types and their rate of occurrence in the United States.

Distribution of Blood Types in the United States
Blood Type Frequency
O 37.4%
O– 6.6%
A 35.7%
A– 6.3%
B 8.5%
B– 1.5%
AB 2.4%
AB- 0.6%

