I'm in Indiana, but I get mine from Sunrise Farms. It is not organic, but it is NON-GMO. The chickens love it. 16 for 50lbs. Very good quality. You could also buy a lesser quality feed like Purina and ferment it. (Not saying anything bad about Purina)
Find an all-flock feed that's fresh (mill dates within one month) at your feed store. The best diet is what's available within driving distance, and that's fresh. It's going to vary depending on where you live. Check at your state thread too.
Mary