Chick fil A
Chick-fil-A is dominating fast food.

Business Insider/Hayley Peterson

Chick-fil-A is dominating fast food.

The company generates more revenue per restaurant than any other fast-food chain in the US, and it’s only open six days a week.

Chick-fil-A’s average sales per restaurant in 2016 were $4.4 million, according to a new report from QSR magazine.. Its fried-chicken competitor KFC sold $1.1 million per restaurant that year.

Whataburger ranked a distant second to Chick-fil-A with $2.7 million in per-restaurant sales, followed by Panera and Jason’s Deli.

Despite its relatively small size, Chick-fil-A also ranks highly in terms of its total sales.

The chain generated nearly $8 billion in revenue in 2016, making it the eighth-largest fast-food chain in the US, according to QSR.

Chick-fil-A has only 2,100 restaurants, and none of its restaurants are open on Sundays. For comparison, McDonald’s has more than 14,100 locations in the US, Taco Bell has nearly 6,300, and KFC has more than 4,160 — most of which are open seven days a week.

Chick-fil-a moms
YouTube/The Texting Yoga Pants

Yet, Chick-fil-A generates more annual revenue than dozens of other chains that have more than twice as many US locations, including KFC, Pizza Hut, Domino’s, and Arby’s.

So what is the secret to Chick-fil-A’s success?

Beyond the…