Do lightning bugs live in Florida?

Yes. I live just north of Orlando, Florida and there's a lightning bug flashing on my back door right now. However, I've never seen more than one or two at a time in the past ten years I've lived here. When I lived in Ohio, as a child, there used to be thousands in the yard at night. I don't know if there naturally aren't as many lighting bugs in Florida, or if they're disappearing everywhere.