Lost something in Antioch? File one report and we handle the rest.
Submit your loss once, and we notify the Antioch Police Department, Tri Delta Transit, local businesses, and monitor social channels plus online marketplaces continuously so you don't have to.
What did you lose?
If there isn’t an adequate suggestion, select “Other – My item isn’t listed” and enter the item’s category. You can provide details later.
Publishing your report is free and your details stay private. The assisted search is a separate paid service, described in the Terms.
Recent activity
California : found property must be held by law enforcement for at least 90 days before it can pass to the finder, be auctioned or disposed of. (California Civil Code §2080.2)
Across the United States
- Wrislet clutch gray/silver bag with documents · Chicago, IL, October 8
- Ring TM on top · Greensboro, NC, October 8
- Keys · Sarasota, FL, October 8
- Keys · Brookline, MA, October 7
- Camera · Monterey, CA, October 7
Local contact details reviewed on July 13, 2026.
How it works
You describe your loss
Tell us what went missing, where, and when. We generate a complete report with all the details needed to reach the right people in Antioch.
We route it where it matters
Your report goes straight to Antioch Police, Tri Delta Transit lost and found (if applicable), and relevant local departments. No back-and-forth on your end.
We scan for matches automatically
Our system monitors Facebook groups, Nextdoor, online classifieds, and local community pages for matching 'found' posts. You get an alert the moment a credible match appears, 24/7 for months.
Where to report in Antioch
The main places that receive and hold lost items in the area, and how to contact them.
Antioch Police Department
The police department logs lost property reports and holds items in their custody. For non-emergency losses, call dispatch. We determine which precinct covers your location and file on your behalf.
File a police report or call (925) 778-2441|Police Department main page
Tri Delta Transit Lost & Found
If your item was lost on a local bus, Tri Delta maintains a dedicated lost and found office. Items are held at their administrative facility. We can alert them directly and provide the details they need.
Antioch City Hall
City Hall may receive lost items from city facilities or parks. A general report filed here ensures nothing slips through the cracks in municipal systems.
Lost Pet?
If your pet is missing, Antioch Animal Services is your first stop. They can check for strays, scan microchips, and help coordinate your search across local shelters and the broader rescue network. Urgent action and continuous monitoring make all the difference. file a priority lost pet report
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
The faster you report, the better your chances.
Once your loss is in the system, you've done the hardest part. Our monitoring team keeps working for you automatically, scanning local channels and the web continuously. No need to chase leads yourself every morning.
Report my lost item →Losing something in Antioch can feel scattering, especially when you're not sure which department holds lost items or where to start searching online. Between the police non-emergency line, transit lost and found, and dozens of local Facebook groups, piecing together a response takes time you may not have.
ReportLost simplifies this. One report reaches all the right channels at once, and we keep searching the web continuously so you can move forward instead of refreshing pages every day. Once your loss is filed, our team and our monitoring systems take over.
Common places losses happen in Antioch
Knowing where you lost something helps us route your report faster.
Downtown & Main Street
Retail, restaurants, and foot traffic throughout downtown Antioch; items often left in shops, cafes, or on the street.
Tri Delta Transit Bus Routes
Items frequently forgotten on local buses or at transit stops along major corridors in and around the city.
Waterfront & Parks
Antioch's waterfront parks and recreation areas see seasonal foot traffic where phones, bags, and personal items are commonly misplaced.
Shopping Centers
Malls and strip centers throughout the area where items are left in stores, parking lots, or common areas.
Antioch community channels
Local groups where 'found' posts often appear. We monitor these for you.
Community group dedicated to reuniting lost and found pets in the Antioch area
Active Facebook group for lost pet alerts across the 925 area code
Neighborhood and community pages where residents post found items and lost notices
Neighborhood app where local found items are frequently posted
Questions about lost items in Antioch
How long does the Antioch Police Department hold lost property?
The police department typically holds unclaimed lost items for a set period before disposal, though exact timelines can vary. Reporting quickly and asking about hold periods when you call (925) 778-2441 helps ensure your item is preserved.
Where do I actually pick up a lost item from Antioch Police?
Items are held at the Antioch Police Department, located at 300 L Street, Antioch, CA 94509. Call their non-emergency line at (925) 778-2441 to confirm your item is there and arrange retrieval during business hours.
How long does Tri Delta Transit keep lost and found items?
Tri Delta Transit holds items at their administrative office (801 Wilbur Avenue, Antioch). For specifics on hold periods and retrieval, contact their lost and found team at (925) 754-6622.
Can ReportLost.org help me search local Facebook groups and Nextdoor?
Yes. After you file a report with us, our system continuously monitors local Facebook groups, Nextdoor, PawBoost, and online classifieds for posts matching your lost item's description, location, and timeframe. You'll be alerted the moment a credible match appears.
What if my item ends up on an online marketplace?
Our automated monitoring scans public classifieds, marketplace listings, and community resale sites. If someone posts your item for sale or giveaway, we detect it and notify you so you can take action.
Is ReportLost.org an official city service?
ReportLost is an independent service, not run by the City of Antioch, Antioch Police, or Tri Delta Transit. We're a companion tool that aggregates your report and automates the monitoring that would otherwise fall on you. When you use ReportLost, we file the official report with the right local authorities on your behalf, but we don't replace them.
Lost & found in nearby cities
Ready to report your loss?
The sooner your item is in the system and being monitored, the sooner we can help bring it home. Start your report now, and let our team handle the outreach and the searching.
Start my report →ReportLost.org is an independent service and is not affiliated with, endorsed by, or part of the City of Antioch, Antioch Police Department, Tri Delta Transit, Antioch Animal Services, or any other local government or public agency. We work as a complementary tool to file reports and monitor channels on your behalf; we do not replace official lost and found services or police procedures.