Not a political, deep state, fake news, gnome squatch pizza gate subject.

Just curious if anyone ever gets asks a lot where you are from?
I've live in Washington my whole life, but pretty consistently have people ask me if I'm from Minnesota, Wisconsin etc.
They always mention an upper Midwest state.
I got asked again by the checker at the grocery store this weekend.

I find it humorous when asked, but is there such a thing as a PNW dialect?
SF