Biology
Pie Chart of ABO Blood Type Distribution (US)
Last reviewed on 2026-05-22.
Biology — verifiable data, editable template
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The US population's blood types follow a stable distribution. O+ is the most common at about 38%; the rare AB- type accounts for under 1%.
The data
- O+ — 38 %
- A+ — 34 %
- B+ — 9 %
- AB+ — 3 %
- O- — 7 %
- A- — 6 %
- B- — 2 %
- AB- — 1 %
Source
American Red Cross blood type statistics (US).
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