What are the most common chicken breeds?

[esmith27]

List of 5-10

 

[50-45-1]

White leghorn
Rhode island red
Barred rock
Isa brown or sex link group
Buff orphington

These pop in my mind first

 

[nuthatched]

Sex links, though they aren't a breed per say.
Wyandottes
Australorp
Orpingtons
Silkies
Easter eggers, again, not really a breed.

 

[21hens-incharge]

I think it depends on a few things. Location, current trend, and availability will affect what is most common that year.

Here it is pretty consistent to see
Buff orpingtons
Australorp
Leghorns
And while not a breed
Sex links
Easter eggers

 

[U_Stormcrow]

Leghorns, CornishX (not a breed, but oh so common), Golden Sex Link (again, not a breed, but oh so common) RI/NH Reds, Brahma, Orps, Silkies, Wyandottes. and the EEs (again, not a breed, but oh so common, with help from the farm store and the recent surge in home hen ownership).