Offenders.io provides a sex offender search API that queries over 900,000 registered sex offender records across all 50 U.S. states. The database is updated daily through incremental syncs — not monthly bulk refreshes — making it the most current sex offender registry API available. Search by name, address, zip code, or GPS coordinates with sub-200ms response times. Non-technical users can search through a no-code dashboard.
Three ways to search the registry — by name, by location, or by alias.
Query by first name, last name, and date of birth. Get instant matches with photos, addresses, crimes, and source links.
The only API with native geospatial search. Find all offenders within 1–100 miles of any GPS coordinate.
Extensive mode searches all known aliases, alternate spellings, and prior names on file — critical for compliance screening.
130,000+ more records than typical registry APIs, with daily freshness instead of monthly.
| Feature | Offenders.io | Typical Registry APIs |
|---|---|---|
| Total Records | 900,000+ | 500,000–770,000 |
| Update Frequency | Daily | Monthly |
| GIS Radius Search | ✓ | ✗ |
| Alias Matching | ✓ | ✗ |
| MCP Server for AI | ✓ | ✗ |
Organizations across industries use Offenders.io to power safety workflows.
Screen employees, volunteers, and contractors against the national registry. Integrate into existing HR platforms or use the no-code dashboard.
Check neighborhoods and screen tenants before signing leases. Read the property manager guide →
Patient intake screening for skilled nursing facilities. Meet state-mandated pre-admission requirements across Ohio, Texas, Louisiana, and more.
Visitor management systems, school safety platforms, and investigative tools powered by real-time registry data.
Connect Claude, Cursor, or custom AI agents via our native MCP server. Or build an AI-powered alert system.
Technical teams integrate via REST API. Non-technical users search through the dashboard — no code required.
curl "https://api.offenders.io/sexoffender\ ?key=YOUR_KEY\ &firstName=John\ &lastName=Smith\ &zipcode=94104"
Log in at dashboard.offenders.io/search, fill out the form, and get results instantly. Upload CSVs for batch screening.
Over 900,000 records across all 50 US states and territories. Our database is updated daily through incremental syncs with state registries — not monthly bulk refreshes like most competitors.
Yes. Offenders.io is the only sex offender API with native GIS-based radius search. Specify latitude, longitude, and radius (1–100 miles) to find all registered offenders in an area.
Extensive mode searches all known aliases, alternate spellings, and prior names on file for each registrant. This is critical for compliance screening where offenders may use different names.
Yes. 50 searches per month are completely free, no credit card required. View pricing for higher volumes.
Daily. We run incremental syncs across all 50 state registries every day. Most competitors update monthly or quarterly, leaving a 30–90 day blind spot.
50 free searches per month. No credit card required.
Or explore the interactive sex offender map to see our data in action.