The Most Common Blood Types In The US, Visualized

In general, blood type O-positive is the most common blood type in the world, while AB-negative is considered the rarest, but does this trend apply to the blood type distribution in the US?

Using data from Wikipedia and the Standford Blood Center, Reddit user foiltape put together this pie chart that shows the most common and least common blood types in the US:

And here's a more precise percentage breakdown from most common to least common blood types in the US:

1. O-positive (37.4 percent)
2. A-positive (35.7 percent)
3. B-positive (8.5 percent)
4. O-negative (6.6 percent)
5. A-negative (6.3 percent)
6. AB-positive (3.4 percent)
7. B-negative (1.5 percent)
8. AB-negative (0.6 percent)

And if you disregard the Rh+ and Rh- blood type classification system, and just look at O, A, B and AB blood types the most prevalent blood type in the US is blood type O (44%), with blood type A at a close second (42%). Blood type B makes up only 10% of the population, while blood type AB is the rarest at 4%.

It should be noted that while the ABO and the Rh+ and Rh- blood type group systems are the ones we are most familiar with, there are way more ways to classify our blood types. In fact, there are millions of ways we can categorize our blood types — we just haven't defined all of them yet.

[Via Reddit]