Know who's registered near you.

Know the Block is a free app that maps public sex offender registry listings from official state registries, so you can check the area around your home, your kids' school, or anywhere you're headed.

Free, with no account, no ads and no tracking.

Every listing comes from an official state registry and links back to it. Information can be out of date or wrong, so always check the official registry before acting on it, and never use it to harass or threaten anyone. Doing so may be a crime.

Support

Questions, a wrong listing, or a state you'd like to see covered? Email contact@knowtheblock.org. To correct a registry record itself, contact that state's registry. The app links to it on every listing.

For the national registry, visit the Dru Sjodin National Sex Offender Public Website.