When people (or Facebook) ask "what is your hometown?" does that mean the town you were born in, the town you grew up in, or the town you live in at present?

I was born in NYC, grew up in Bronxville, which is a small town outside of NYC, and i presently live somewhere else. I am wondering what Facebook or people refer to as their hometown. is it the town they were born in, or the town they grew up in? or is it the town that is their home at present?