There used to be a location data field. I don't see that anymore and I don't see how to add it when I look at my own profile, but I see it in a few other's profile. Am I missing something?
Pull down the menu next to your name at upper right, select My Profile, at profile select Edit My Profile and scroll to the bottom of the page and you'll find location. I just went through the process yesterday after a long search through the various menus.