Gambling is a big business globally and casinos exist in almost every country. The United States leads the race of the most casinos in the world. According to the WorldCasinoDirectory, the U.S. has 2,147 licensed casinos and 619 casino hotels, across 920 gambling cities.

There are around 1,500  2,200 casinos all across the US. 44 US states have some form of casino, whether commercial, tribal, or both. Nevada and New Jersey are two of the most recognized US casino tourism states.