From the U.S. Department of Justice: National Sex Offender Public Registry.

I did a search using my state and zip code and found wayyyyyy too many in my area.

Speaking of searching using state and zip, why is on most websites when you enter a zip and perform a search, you also have to enter the state? Shouldn’t the zip code be enough?

The same thing happend to me when I was looking for a WAMU branch:
http://clients.mapquest.com/wamu/mqlocator?link=findusmain