According to my sources, there are three UPS hubs in Florida: Jacksonville, Hialeah, and Orlando. If the place you applied to isn't one of these places, then it is a local sort.
In case you don't know, these are the main differences between the two. A hub transfers stuff from trailer to trailer, train to trailer, trailer to train, or to and from aircraft if it's an air hub. Packages are sorted as they are transferred, and if not sorting in some way you are generally loading or unloading trailers or whatever. Local sorts, on the other hand, are specifically for local package delivery. The preload shift involves receiving trailers from hubs, sorting the contents, and loading them onto the package cars. Reload is preload in reverse; stuff comes off the package cars (and some local trailers) and is loaded onto trailers which are sent to hubs. However, there are preload and reload operations like this at hubs, but hubs are open 24 hours while local sorts usually only have those two shifts. Also, hubs are obviously much larger than the local sorts.
I know, it's a lot of information, but I wanted to give you an idea of what goes on at what place, and how to tell them apart, if you didn't know already.