Yes, you can go to a casino at 18 in some states where the legal gambling age is 18. However, many states in the US require individuals to be at least 21 to enter a casino. It is important to check the specific age requirements in the state where you plan to visit a casino. Some casinos may have restrictions on certain areas or activities within the establishment for those under 21. Make sure to bring a valid form of identification to prove your age when visiting a casino.