How do I check to see if there are sex offenders in an apartment building before I move there?

My boyfriend and I make better money than we did a year ago so we are looking into apartment complexes to move into in the late summer or so. Need more room, haha.

How do I check to see what sex offenders (if any!) live in an apartment complexes? Child molesters are as creepy as hell and I’ll avoid them like the plague if I have to live near them but I want to specifically avoid any apartment that houses rapists who have raped adults. They are animals and I won’t feel safe living near someone that may rape again.

Please advise.