Per the Common Data Set, it’s considered. I can’t speak for BC, but typically schools with a national profile want geographic diversity - hence, they say in their case - last year’s class had 44 states represented.
31% are from New England.
So being from elsewhere will be a boost because they want to hit all 50 states - and probably have all 50 in their student body - given they have a national profile.
So yes it matters - but I would not make a decision to apply or not based on where you live. It will be of minor consideration but if there’s two spots left and it’s you and someone from Wyoming and you are identical otherwise, my assumption would be (but I’m not them) that the student from Wyoming would get the nod.
This should be of zero importance thought as to whether you are deciding to apply or not. You cannot control that. And a large portion of their class will always come from neaby. They have 61% that are defined as Mid-Atlantic and New England (they don’t have a NE classification).
Your GPA, Rank, Rigor, Test Score, ECs, Essays, etc. should determine whether you should apply - not your state of residence.
Good luck.