Most casinos have a cashier's cage or a designated area where you can exchange your chip for cash. Make sure to bring a valid ID with you when you go to cash it in. If you're unsure about the specific procedures at the casino, you can always call ahead and ask about their policies for cashing in chips.

In general, the older the chip, the more valuable it is. A textbook example that proves the point is a circa-1948-51 Club HarlemR$5 chip from the Reno, Nevada casino of the same name.

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.