Sex Offender Website
The Crystal Lake Police Department provides a sex offender website. Citizens may enter a geographical location and determine its proximity to registered sex offenders. Users also have the ability to sign up for confidential email alerts to track sex offender residential movements. Please visit the website here

Child Murderer and Violent Offender Against Youth
The Illinois State Police maintain a comprehensive website listing all Child Murderer and Violent Offenders (CMVOs) registered in the State of Illinois. Interested parties click here

Once you agree to the disclaimer (scroll to the bottom), you will be forwarded to the interactive site where you can search statewide under a number of parameters. You can also click on the mapping feature to search just your surrounding neighborhood.