How to search for sex offenders in Washington
Two ways to check the Washington sex offender registry: manually on the official state site, or programmatically across Washington and every other US registry with a single API call.
Option 1 — Search the official Washington registry
- Open the official Washington sex offender registry public search.
- Search by last name (required), first name, or by city / ZIP / address.
- Open a result to see offenses, registration status, and known addresses.
- Note the record URL — it’s the authoritative source for that person.
The public Washington site is best for a one-off, manual lookup. It won’t scale to bulk screening or cover other states in one search.
Option 2 — Search Washington with the Offendersearch API
One authenticated request queries the Washington registry plus the national NSOPW source, de-duplicates people across sources, scores each match, and returns provenance and freshness on every record.
POST /v1/search
{
"query": { "lastName": "Doe", "state": "WA" },
"jurisdictions": ["WA", "NSOPW"],
"locationScoped": true,
"freshness": "standard"
}This is a live demo of the API shape returning sample data. Real, scored results across every registry require a free account with billing enabled.
Washington search FAQ
Is searching the Washington sex offender registry free?
Searching the official Washington public registry directly is free. The Offendersearch API is for teams that need programmatic, scored, multi-source results across Washington and every other jurisdiction in one call.
Can I search sex offenders near an address in Washington?
Yes. Provide a city, ZIP, or latitude/longitude with a radius and the API returns registrants near that location in Washington, each scored and tagged with its source.
How current is Washington registry data?
Every record returns a lastCheckedAt timestamp. Choose the Standard, Weekly, or Daily freshness tier depending on how recently Washington data must have been re-verified.