Welcome to BYC.
The usual guidelines -- which are guidelines, not hard-and-fast rules -- are:
4 square feet per chicken in the coop,
10 square feet per chicken in the run,
1 linear foot of roost per chicken,
and 1 square foot of permanent, 24/7/365 ventilation per chicken.
This can vary depending on your specific situation, with some things like integrating new birds requiring more space.
What kind of chickens do you have and how old are they?
I have 5 chickens, all 8-month pullets, and am getting 3-5 eggs per day myself. Three of my ladies, a California White and 2 Blue Australorps, are breeds known as good egg layers while the other two, a Light Brahma and a Silver-Laced Wyandotte, are not known for high egg production so I figure that I'm getting exactly what I should expect from the current flock.