Blood Type Rarity Statistics
Discover how common or rare different blood types are worldwide. Population frequencies vary by ethnicity and geographic region.
Population Group
Blood Type Distribution
O+37%
37%
Very Common
A+36%
36%
Very Common
B+9%
Uncommon
O-7%
Uncommon
A-6%
Uncommon
AB+3%
Rare
B-2%
Rare
AB-1%
Very Rare
Detailed Statistics
| Blood Type | Frequency ↓ | Rarity |
|---|---|---|
| O+ | 37% | Very Common |
| A+ | 36% | Very Common |
| B+ | 9% | Uncommon |
| O- | 7% | Uncommon |
| A- | 6% | Uncommon |
| AB+ | 3% | Rare |
| B- | 2% | Rare |
| AB- | 1% | Very Rare |
⭐ Rare Blood Types
The rarest blood types (AB- and B-) occur in less than 2% of the population. People with these blood types are highly encouraged to donate blood, as compatible donors can be difficult to find.
Learn About Rare Blood Types →⚠️ Note on Statistics
Blood type frequencies vary significantly by ethnicity and geographic region. These statistics are approximate and based on general population studies. Individual populations may show different distributions.