That's what the registry is for. You can access information about sex offenders and find out such things. Like how old they were at the time and how old their victims were. I just looked up my former neighbor...
Conviction Date County Age at Offense Victim Age Victim Gender Weapon Used
709,8 Lascivious acts wchild three countss 09/05/2001 Polk 37 0 - 13 (Age) Female None
709,8 Lascivious acts wchild three countss 09/05/2001 Polk 37 0 - 13 (Age) Female None
709,8 Lascivious acts wchild three countss 09/05/2001 Polk 37 0 - 13 (Age) Female None
So he was actually 37 at the time of the crimes and his victim was a female under the age of 13. That's a lot of possibilities for her age as well. She could have been 3 or 8 or a baby. It doesn't distinguish, but it sure as hell wasn't a case of a boyfriend that was just a few months older having consensual sex with his girlfriend.
I can also access a map that pinpoints where every registered sex offender is around me within a given radius. And let me tell you...it's disturbing. With the sheer amount around me I have one hell of a hard time believing that they were all statutory rape cases.