An even crazier example is the Arizona Strip -- that is, the part of Arizona north of the Grand Canyon -- being clustered with the rest of Arizona.
You have to drive 200 miles out of the way to get from one side of the Grand Canyon to the other. Since the northern Strip is very sparsely populated and relatively poor, the number of people there who have the means to regularly commute by plane or helicopter must be zero.
The region north of the Grand Canyon should really be clustered with Utah or Nevada, not with Phoenix and Tucson.
You have to drive 200 miles out of the way to get from one side of the Grand Canyon to the other. Since the northern Strip is very sparsely populated and relatively poor, the number of people there who have the means to regularly commute by plane or helicopter must be zero.
The region north of the Grand Canyon should really be clustered with Utah or Nevada, not with Phoenix and Tucson.