The population of Flagstaff is usually given as 50K, and I know that the university's full- or nearly-full-time student population is around 25K these days. Most of them live on campus, so town is fairly deserted over the summer. There are also essentially two sections of town -- the part down by campus, and the part full of $500K condos up to the northeast -- and the two try never to meet if they can possibly help it. So down at our end of town, it's pretty well empty from mid-May to mid-August, when it abruptly becomes a clusterfuck of freshcritters who have no idea where they're going and cannot find McConnell Hall even though the first Flagstaff exit on the highway coming up from Phoenix is conveniently called McConnell Drive, and it's a one-way street that basically dead-ends at the dorm parking lot.

There is a reason we skipped town for a concert on move-in weekend.