I would like to preface this with two things. One, I have the good fortune to never be misgendered. Two, I think this is a common thing in the midwest and southern states. It still however, gives me pause when women of all ages say "have a good day babe!" or something like it. I could be buying alcohol and still get it, so it's not like they're saying it to a child.
Oh, speaking of geographical quirks, there also seems to be a lot more sir'ring and ma'aming out here. If I go into a major city, I'm lucky if the cashier even says hi.