As with many things in life, there is no single answer to whether or not Bingo is legal in Alabama. Individual counties and municipalities may have their own regulations, so it is important to do some research if you are considering playing the game. Generally speaking, though, it would appear that Bingo is not expressly prohibited by state law.
However, there is no guarantee that any local jurisdiction would welcome Bingo games as a resident or visitor. If you are intent on playing Bingo in Alabama, be sure to check with your local authorities first.
In conclusion, it does not appear that Bingo is expressly outlawed in Alabama, but it is always a good idea to check with your local authorities before playing the game.