FAMILY WATCHDOG

Family Watchdog is a free sexual offender list. Just enter the address, zip code or state and you are on your way to finding any and all sexual offenders in your neighborhood, near your schools and in your communities.

https://www.familywatchdog.us/Default.asp

Also check out FBI:

https://www.fbi.gov/how-we-can-help-you/safety-resources/scams-and-safety/sex-offender-registry