I grew up cursed enough to move numerous times, all throughout the state of Michigan. Unfortunatley, though, I am very good at severing all ties to people and places where I've lived (or conversly, I'm very bad at keeping in touch), so if I'm asked if I know someone in, say, Grand Rapids, I usually say "rings a bell", but that's about it.
So, is "where I'm from" where I went to high school? Where college is? Where I was born? Where I lived the largest percentage of my life? Where I feel most at home at??
I usually just say Michigan, that's the only good answer I can give.