Geographically, I'd give Arizona three rough regions.
Southern Arizona where most of the people live, including Phoenix and Tucson metros, is the Sonoran desert:
https://www.worldatlas.com/articles/...esert-lie.html
North of that (colloquially 'Northern Arizona,' but it's really in the middle) is Ponderosa Pine forest:
https://www.knau.org/post/coconino-n...ildfire-danger
Northern Arizona is the Grand Canyon and the Colorado Plateau:
https://www.triptipedia.com/tip/o9Kq...lorado-plateau
While the regions can look quite different, they are all desert or high desert. Even the Ponderosa Pine forests are relatively dry, getting ~20" rain a year.
Culturally, I view Arizona as fairly unified. There are obviously some differences--an easy one is that Tucson and Flagstaff metros voting Democrat in 2016 national elections, while Phoenix metro and the rural counties voted Republican--but I view the differences mostly as differences of degree.