How many chickens can I fit in my coop and how large should my run be?

[Cochin378]

My Dad and I are currently in the process of building a new 10 by 12 chicken coop. We live on twenty acres of land and we have at least two acres of green grass that we could use for the run. How many standard chickens can I fit comfortably in my coop? and how big do you think the run should be?
Have a great day. Cochin.

 

[wormy270]

Ive always heard 3-5sq ft per chicken. Ideally 10 sq ft per chicken. Same for the run I would assume. So I would say you can keep 10 hens and roo comfortably. My coop is the same size as yours. I made my run 10X20. I have 7 chickens right now. If your going to free range them on your land you could probaly keep more.