The coop itself is 6x6 and the run is 6x12...I had planned on 3 square feet per girl. They all free range 4 or 5 times a week. I want to get 7 more for a total of 12. I've read here that happy chickens lay the best eggs. So I play with them daily and hope the new coop will give them the adequate room requirements. If not I'm up for building a larger one...lol.