most common blood type in us
The most common blood type in the US is A+ and O+ (about 40% each) and this trend continues in most of the western nations. Many Asian nations have mostly A+ and B+ and thus there are also a lot of AB+.Rh positive is generally more commonly seen than Rh negative all over the world. Source(s): wikipedia. just now. Report Abuse. The most common blood type in the US is A+ and O+ (about 40% each) and this trend continues in most of the western nations. Many Asian nations have mostly A+ and B+ and thus there are also a lot of AB+. Rh positive is generally more commonly seen than Rh negative all over the world.