From my experience and talking to all my friends:
Guys in their teens want chicks in their teens
Guys in their 20s want chicks in their teens and 20s.
Guys in their 30s want chicks in their 20s. See what just happened there?
Guys in their 40s want chicks in their 20s but might go for early 30s
Life hands young women all the cards, but time is not their ally. Many dont seem to grasp that the time to get a nice guy who has his life/career in order....maybe not rich yet but good career path or grad degree.....is in their 20s. If theyre still knocking around with exciting bad boy types who are going nowhere and think theyre going to be able to settle down with that nice guy when theyre 32-33, theyre heading for disaster. Ive seen it several times. Theyre always shocked when they discover the guys who were pursuing them even 5 years ago are no longer interested.
Girls in their early 20's have the most interest from guys, while guys in their early 20's are at a disadvantage in the dating pool. This shifts at around 26.