US State which has the borders with the worst COI?

[dkxdjy]

New York

[dkxdjy]

Community of Interest

For the example the reason why I said New York is because New York City and much of upstate New York aren't that similar to each other (and have different interests), while portions of the New York City metropolitan area, which would share common interests with the city itself, are located in other states (Connecticut, New Jersey)

[dkxdjy]

For larger states I'd say California, Texas, and Florida are still relatively good, while New York, Illinois, and Pennsylvania are worse

Oregon is also not so good (eastern Oregon is more connected to Boise than Western Oregon)

From a COI perspective I'd also suppose it's beneficial for states to have main economic centers geographically located centrally (as do, say, Arkansas and Indiana).