Per the Yavapai College website:
Transporting Firearms On Campus: Firearms are not to be taken to the class areas without the specific permission of the instructor affected (i.e. classroom demonstration) and the Y. C. Police Department. Firearms are not to be carried to or around the general campus areas such as snack bar or library. Firearms are not to be left in vehicles. Firearms transported anywhere outside the Gunsmithing Lab are to be cased. You may store your firearms in your Gunsmithing locker or in the Y. C. Police Department’s gun locker. Y.C.P.D. can also store ammunition for you.
If you go to the Frontier Village shopping strip (Home Depot, Old Navy, Target, etc) on Hwy 69, that is Reservation Land. Technically, it is a 'no carry' area, but Tribal Police do not enforce it ("We can't realistically enforce it" is the quote I got").
Costco is posted "no firearms".
These are the places you should know about, off the top of my head. Of course, all the usual state laws apply.
OC is not real common, but I see at least one other OCer every week or two.