Sex Offenders in Contra Costa County, CA
As of August 2026, we index about 1,198 registrants with a Contra Costa County, CA address — about 10.3 per 10,000 residents. The figure is approximate and moves continuously — search below for the current picture on any specific person.
No code needed — type a name, get photographs and official registry records.
How Contra Costa County compares
Registrants we index per 10,000 residents, against the California and national averages. All three rows come from the same continuously updated dataset, so the comparison divides like by like.
| Area | Registrants we index | Per 10,000 residents |
|---|---|---|
| Contra Costa County, CA | 1,198 | 10.3 |
| California average | 62,895 | 15.9 |
| United States average | 1,563,010 | 47.2 |
Search Contra Costa County — and everywhere else at once
People move. A check limited to Contra Costa County misses a registration anywhere else, so a search here covers every US registry — all 50 states, DC and the territories — and lets you narrow to a Contra Costa County city or ZIP when that is the question. Every result is scored, carries its photographs, and links to the official registry record.
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.
Contra Costa County offender search FAQ
How many registered sex offenders are in Contra Costa County?
As of August 2026, we index approximately 1,198 registrants with a Contra Costa County, CA address — about 10.3 per 10,000 residents, or about 1 in 973 residents. Treat the figure as scale rather than a fixed number: the registered population moves continuously as people are added, move, or are released from the requirement. When you need an answer about a specific person, run a search.
How does Contra Costa County compare with the rest of California?
Contra Costa County sits at about 10.3 registrants we index per 10,000 residents, against a California average of about 15.9 and a national average of about 47.2. Density varies block by block inside any county, so use the ratio as context — and a search, not an average, to answer about a specific address or person.
How do I check a specific person in Contra Costa County?
Type their last name and add whatever else you hold — first name, date of birth, or narrow to a Contra Costa County city or ZIP. You get scored matches with photographs and official record links, and the search covers every US registry at once, so someone now in Contra Costa County who was registered elsewhere still surfaces. Your first 25 searches are free, no card required.
Offendersearch is not a consumer reporting agency and results are not a consumer report. Do not use them for FCRA-covered decisions without appropriate process.