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Information about Sex Offenders

Information about the sex offender classification and what the classification levels mean.

Sex offenders in Massachusetts must register if they live, work, or attend school here. You can search for a specific offender by searching their town or personal information. You can also search for offenders who are in violation of their registry. You can also see how many offenders are in your community. To request information about a sex offender, you can fill out a request form. Whether you can see an offender's information publicly depends on their classification level.

What would you like to do?

Top tasks

Search for sex offenders via SOR public website  Electronic Sex Offender Registry Information (ESORI) Portal  Request sex offender information (SORI) 

All other tasks

Search the national sex offender registry  Levels of sex offenders  Who has to register as a sex offender  View offenders in violation  Number of offenders in your community 

Contact Information

Address

P.O. Box 392, North Billerica, MA 01862
Directions 

Phone

Main office (978) 740-6400

Open M-F 8 a.m.-5 p.m.

More Information

Additional Resources

Community Notification Brochure (PDF 1010.56 KB)
ESORI Portal User Guide (PDF 542.12 KB)
ESORI Portal User Account Help Guide (PDF 299.43 KB)
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