I'm almost 21, so I am in the target demo.
I don't remember the AC focus during the day back when I was in high school. And even in the evenings, it sounds more like a Mix 106.5 (Baltimore) than a Z100. There's no hip hop anymore.
I just find the type of CHR played on 92.3 Now or Q102 to be more appealing to me. If I want AC, there's Magic 98.3.