If there are pet stores or pet expos selling them in Georgia, then obviously they are legal. And corn snakes are currently the number 1 selling snake for pets, so if you can't find anyone selling in Georgia, then they are probably illegal.
The way I understand the law, you can't keep a wild caught snake. If it's produced from a breeder, that's different. But to be sure, see if you can buy them anywhere in Georgia. That should tell you right away. I'm in Tennessee, and all the chain stores here have them.