To report a sex offender not living at their registered address, call the non-emergency line of the police department or sheriff’s office covering the area, or submit a tip to the U.S. Marshals Service, which handles these cases directly. Before you call, take a few minutes to confirm the offender’s registered address on the National Sex Offender Public Website (NSOPW.gov) and write down what you’ve actually seen.
Confirm the Registered Address First
Start at NSOPW.gov, which pulls data from every state, territory, and tribal registry into one searchable database. You can search by name, by zip code, or by street address within a one- to three-mile radius.1Dru Sjodin National Sex Offender Public Website. Search Public Sex Offender Registries
Clicking a result opens the detail page maintained by the home jurisdiction, which shows the address currently on record. NSOPW does not maintain the underlying data; each jurisdiction controls its own listing.2Dru Sjodin National Sex Offender Public Website. Frequently Asked Questions If the listed address matches the place the person no longer seems to be living, you have what you need to file a useful tip.
Write Down What You’ve Observed
Specific detail is what turns a tip into something an investigator can work with. Have the offender’s full name and their officially listed address in front of you. Then document what you’ve seen.
The most valuable piece is the suspected new location. A street address is ideal, but a neighborhood, a nearby landmark, or a description of the property still helps. Note the dates and times you saw the person there. A pattern of repeated presence carries more weight than a single sighting.
Vehicle details matter too. Make, model, color, and license plate for any car associated with the offender give investigators another way to place the person. Packages delivered to the address, cars parked overnight, lights on in the evenings, mail piling up at the registered address instead: any of that is worth mentioning. Concrete observations are what let law enforcement act.
Do Not Approach the Person
Don’t confront the offender yourself. Approaching someone you suspect of hiding from the registry can put you in danger, and it warns them in time to disappear before investigators arrive. Your job ends at making the report.
Where to Send the Report
You have more than one channel, and using more than one is fine.
Local Police or Sheriff
The most direct route is the non-emergency line of the police department or sheriff’s office that covers the area where the offender is registered or where you now believe they’re living. Use the non-emergency number, not 911. The Department of Justice directs the public to local police or sheriff’s departments to report non-compliant offenders.3U.S. Department of Justice. Report Violations
U.S. Marshals Service
The U.S. Marshals Service specifically accepts tips about registered sex offenders who are not living at their correct address. You can file through the online USMS Tips application, which is set up for this exact type of report.4U.S. Marshals Service. Submitting a Tip The USMS headquarters number is (202) 307-9100.
State Registry Tip Forms
Many states have their own online tip forms through the state police, department of public safety, or department of justice. The easiest way to find the right one is to start at NSOPW.gov and click through to your state’s registry page.2Dru Sjodin National Sex Offender Public Website. Frequently Asked Questions
Reporting Anonymously
Most reporting channels accept anonymous tips. On a non-emergency call, tell the operator you’d like to remain anonymous. Online tip forms almost always include an option to withhold your identity. Leaving your contact information is optional and only useful if investigators need to follow up on something in your report.
What Happens After You Report
Law enforcement reviews the tip and decides whether to open an investigation. That work can involve surveillance, interviews with neighbors, and record checks to determine where the person is actually living.
You will not get updates. Registry violation investigations are confidential, and agencies do not share progress or outcomes with the person who submitted the tip. That can feel frustrating, but the information is in the system once it’s filed.
What the Offender Is Actually Violating
Federal law requires registered sex offenders to keep their registration current wherever they live, work, or attend school. Under the Sex Offender Registration and Notification Act, an offender who changes name, residence, employment, or school must appear in person and update the registry within three business days.5Office of the Law Revision Counsel. 34 USC 20913 – Registry Requirements for Sex Offenders An offender who knowingly fails to register or update as SORNA requires faces up to 10 years in federal prison, a fine, or both.6Office of the Law Revision Counsel. 18 USC 2250 – Failure to Register States must impose their own penalty carrying a maximum term of more than one year.
An outdated address isn’t just paperwork. When the registry is wrong, neighbors who check it get false reassurance and the agencies responsible for monitoring lose track of the person. Tips from the public are how that gap closes.
Worried About Retaliation
Federal law makes it a crime to harass or intimidate someone to keep them from reporting a federal offense to law enforcement, with a penalty of up to three years in prison.7Office of the Law Revision Counsel. 18 USC 1512 – Tampering With a Witness, Victim, or an Informant Failure to register under SORNA is a federal offense, so the protection reaches people who report registry violations. If you’re worried about retaliation, say so when you file the report. Filing anonymously removes most of the risk to begin with.
What If You’re Not Sure
You don’t have to be certain the person has moved before you call. A good-faith report based on what you’ve actually observed is what the tip lines are for; investigators sort out the facts from there.
What you shouldn’t do is invent details or file a report to settle a personal dispute. Knowingly false statements to a federal agency carry up to five years in prison.8Office of the Law Revision Counsel. 18 USC 1001 – Statements or Entries Generally State false-reporting laws add their own penalties. The legal risk falls on people who fabricate, not on people who turn out to be mistaken.