Pizza may have originated in Italy, but it has become an American favorite. According to PMQ Pizza Magazine, the United States pizza market grew to $45.1 billion in 2018, and there were 75,243 pizzerias in the U.S. alone. The fact that a pizza magazine exists speaks to the immense popularity of pizza. The worldwide pizza market has also expanded to $134 billion in 2017.

There are many variations of pizza in the U.S. and worldwide. Popular American pizzas include Neapolitan, California-style, Chicago deep dish, Chicago thin crust, Detroit-style, New England Greek style, New York thin crust, St. Louis-style and tomato pie: New Jersey style.