Geographical residence vs State residency

[randomPeople]

@TomSrOfBoston

State residency only matters at public universities in determining your tuition as in state or OOS. Geographical residence is to show that the college draws a national student body and is usually shown by region, not state. Some private colleges indicate that residence is considered in admission. At MIT if you are from say North Dakota that may give you the slightest edge compared to a similarly qualified applicant from New York.

Thanks @TomSrOfBoston. That makes sense. However, when I check Duke’s (Brown’s as well) CDS, I found that the state residency is considered. What is the difference between these two schools policy on residency (state and geographical)?