The Westchester County Department of Probation is a law enforcement agency that annually handles cases involving more than 1,000 youth in the Family Court system and more than 6,000 adults in the criminal courts.

All IID Installer and Non-Installer referrals are being handled by email or fax.  E-mail or fax your court documents to  or (914 )813-4199. The Interlock Monitoring Program staff will not be able to answer any questions over the phone unless we have received your court documents.

Read COVID-19 Updates for a list of services through the Family Court Bureau.




The goal is to promote public safety and at the same time hold offenders accountable for their actions. The department works closely with numerous criminal justice agencies, including the District Attorney’s Office, and many social services agencies.

The department prepares pre-sentencing reports for judges, monitors and enforces compliance with probation conditions, respond to the needs of victims, assist families in crisis, and help offenders to change.

In Westchester, monitoring takes the form of residential contacts, drug testing, making sure the offender attends counseling sessions, and helping offenders to find suitable housing and employment.