Lost something in San Dimas? Here is who to contact.
File one report and we notify the San Dimas Sheriff's Station, City Hall, Foothill Transit, local lost pet networks, and monitor social channels and 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 October 7, 2026.
How ReportLost Works in San Dimas
You submit your report
Tell us what you lost, where, and when. We gather the details that matter and make sure they're consistent across every channel that needs to hear about it.
We route it to the right places
Your report goes straight to the San Dimas Sheriff's Station, City Hall, Foothill Transit (if applicable), animal control partners, and gets posted to relevant local social networks and community channels.
We scan for matches automatically
Our system searches the web continuously for 12 months, watching Facebook groups, Nextdoor, local marketplaces, classified sites, and other public channels. When a potential match appears, we alert you instantly so you don't miss it.
Where to Report Lost Items in San Dimas
Official channels and how ReportLost connects you to each one
San Dimas Sheriff's Station
The primary place to report lost property in San Dimas. The Sheriff's Station maintains a lost and found for items turned in by the public and handles incident reports. Call or visit in person at 270 S Walnut Ave. We identify which precinct covers your location and prepare the exact details you'll need when you contact them.
City Hall
City Hall can direct you to additional local services and sometimes retains found items reported by residents or businesses. The administrative staff can also point you toward relevant community channels and inform you of any current lost and found initiatives in the area. We make sure City Hall has your information.
Foothill Transit
If you left something on a Foothill Transit bus in San Dimas, contact their customer service line. They maintain a lost and found system and can check whether your item has been turned in. We route your report to them and track any matches they report.
Lost Pets
If you've lost a cat, dog, or other pet, time is critical. Contact the SPCA (Humane Society) immediately for stray animal pickup and lost pet reports. The San Dimas area has active community pet networks on Facebook and Nextdoor where residents post found and missing animals. We help you reach all of them and file a priority lost pet report.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
The sooner you report, the better your chances
Starting your report now gets your information into the system immediately, so it reaches the Sheriff's Station, City Hall, local community networks, and our automated monitoring all at once. The first few hours and days are when most items are found and turned in.
Report my lost item →Losing something in San Dimas means dealing with multiple channels at once, the Sheriff's Station, City Hall, transit services, and scattered community Facebook groups. Each one operates independently, and if you want your item back, you're responsible for checking with all of them, again and again, every single day. It's exhausting and easy to miss leads.
ReportLost simplifies that. One submission covers all the official departments, all the local networks, and our automated surveillance of the web. Once your report is filed, our team takes over the legwork of routing and monitoring. You get the peace of mind knowing that if your item surfaces anywhere in San Dimas or online, we'll find it and notify you.
Common areas where items go missing in San Dimas
Knowing where you lost something helps us route your report more accurately
Downtown San Dimas and Bonita Avenue
The commercial and civic heart of the city, with shops, restaurants, and City Hall. Items are frequently lost and turned in here.
Parks and Recreation Areas
Including local parks and outdoor spaces where wallets, phones, and personal items are commonly misplaced.
Foothill Transit Bus Routes
Items left on buses or at transit stops are reported to Foothill Transit's Lost & Found system, which we check for you.
Retail and Shopping Centers
Stores and shopping areas where items are turned in to management or security. We contact relevant businesses in your area.
Schools and Community Centers
If you lost something at a local school, college, or community facility, we help you reach the appropriate lost and found office.
Community channels where found items are posted
We monitor these constantly so you don't have to
Active Facebook group where residents post found and missing pets and other items
Official city page where community announcements and found items are sometimes shared
Neighborhood social network where locals post found items and lost pet alerts
Regional Reddit community covering San Dimas and surrounding areas
Frequently Asked Questions
How long does the Sheriff's Station keep lost items?
The San Dimas Sheriff's Station holds lost property according to Los Angeles County Sheriff's Department policy. Typically, items are held for several weeks to months depending on the item type. We recommend contacting them at (909) 450-2700 to ask about the specific retention period and to check the status of your report.
Can I file a report online with the Sheriff's Station?
Yes. The San Dimas Sheriff's Station allows you to file certain types of reports online through their official channels. However, for lost property specifically, calling (909) 450-2700 or visiting in person at 270 S Walnut Ave is often more direct. We handle the routing for you.
What if I lost something on a Foothill Transit bus?
Call Foothill Transit Customer Service at 1-800-RIDE-INFO (743-3463). Have your bus number and route information ready. Items are typically held at their Lost & Found office. We'll also file your report with them and check for matches over time.
How does ReportLost monitor for my item if I lost it months ago?
Our system continuously searches Facebook groups, Nextdoor, online marketplaces like Craigslist and OfferUp, classified sites, and other public channels for posts matching your description, location, and time. If someone posts a found item that matches your report, we alert you. This monitoring runs for 12 months.
What if I lost a pet in San Dimas?
Call the SPCA at 909-623-9777 immediately to report a lost pet and request they check for strays. Post in the 'Lost and Found pets of La Verne and San Dimas' Facebook group and Nextdoor. Time is critical with pets. We have a specialized lost pet report option that covers all these channels at once.
Is ReportLost official? Does it replace reporting to the police or Sheriff?
ReportLost is an independent service, not affiliated with the San Dimas Sheriff's Station, City of San Dimas, or any government agency. We don't replace official reporting. Instead, we make it easier by coordinating your report across multiple official and community channels, and we automate the ongoing search for you. You maintain direct contact with all official channels.
Lost & found in nearby cities
Report it here.
File your report now and let our team handle the routing and monitoring. Once submitted, you can step back knowing that the Sheriff's Station, City Hall, transit, community networks, and our automated web search are all working for you.
Start my report →ReportLost.org is an independent service and is not affiliated with the San Dimas Sheriff's Station, City of San Dimas, Foothill Transit, the SPCA, or any other government or transit agency mentioned on this page. We do not replace official reporting to police or local authorities. We coordinate and simplify the reporting process and provide automated monitoring across public channels. All information on this page is accurate as of the last update, but you should verify contact details and office hours directly with official agencies.