A friend posted this great Joshua Katz map showing what people in the US call Devil's Night. Two thoughts:
1) Seems like a lot of folks in Southeast Michigan "have no word for this night." I wonder if this reflects people identifying where they live as "not Detroit." eg We're so not Detroit, we don't even have a word for Devil's Night here.
2) Common New Jersey, "Mischief Night?" Get serious.H/T: Nick Richie