Yes--anywhere in the nation. And they'll make you very happy. I love my Holderread birds.
An interesting point: When I bought my first flock, I chose a hatchery on the East coast because I thought it would be easier on the birds not to have to travel so far. Only to find out a couple years later that nearly all the major hatcheries order their birds from California. Go figure.
So now I stick with Holderread, and I couldn't be happier with the quality. Far superior birds.