Lost your wallet, ring, or pet in Blackhawk? Report it now and let us handle the rest.
Submit one report and we'll route it to Contra Costa Sheriff's Blackhawk Police, Danville Animal Services, local Facebook groups, and relevant lost & found channels. Your report stays active, continuously searching for a match.
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 Blackhawk
You file your report
Tell us what you lost, where, and when. Include details that matter, like color, size, or any identifying marks on your wallet, purse, ring, or pet.
We route it to the right places
We notify Contra Costa Sheriff's Blackhawk Police, Danville animal control if it's a pet, and post to active local community channels so neighbors and lost & found offices are alerted.
Your report keeps searching
For the entire duration of your search period, your report stays active and continues matching against new posts, found items, and shelter updates, so you don't have to check every group and site yourself.
Where lost items end up in Blackhawk
Know who has what, and how to reach them
Contra Costa Sheriff, Blackhawk Police
Items found on public property or turned in by residents often reach the Sheriff's office serving Blackhawk. Dispatch can take lost item reports and direct you to the right precinct. We tell you exactly which office covers your loss location and what to include in your report.
Town of Danville Parks & Recreation Lost & Found
Blackhawk residents also use Danville parks, playgrounds, and sports facilities. Items found in or near these areas get logged with Danville's Parks & Rec department. If your loss happened at a community facility, this is where to file your claim.
Lost pet? Danville Animal Services
If your dog, cat, or other pet is missing, Danville Animal Services is where lost pets are brought and where you can search the shelter's database. They also coordinate with other county facilities. Time matters with pets, so file a report right away. When you use ReportLost, we make sure animal control gets the alert immediately. file a priority lost pet report
Community & Nextdoor
Blackhawk residents are active on Nextdoor, Facebook lost & found groups, and local community boards. Many items are recovered through neighbors spotting them or posting 'found' notices. We post your report to these channels and generate the text you'd need to share yourself, so no extra work on your end.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
The sooner you report, the better the odds
In Blackhawk, items left at parks, shops, or neighborhoods are most likely to be found in the first few days. Once your report is filed with us, you can stop worrying about manually checking each source. We take it from there, keeping your case alive and watching for matches while you get back to your routine.
Report my lost item →Losing something valuable in Blackhawk, whether it's your phone, a family heirloom ring, or a beloved pet, means navigating several separate channels: the Sheriff's office, animal shelters, community Facebook groups, Nextdoor, and local parks & recreation lost & found. Each one operates independently, and without alerting them all at once, your item can slip through the cracks.
ReportLost simplifies this. One report reaches all the right places at once, and stays active in the background for months, automatically crossing your description against new found items and lost pet posts so you can focus on your day rather than constantly refreshing community boards.
Common places where things get lost in Blackhawk
Blackhawk has some great spots, but they're also where lost items show up most
Blackhawk Plaza & Shopping Areas
Retail centers and parking lots around the plaza are frequent spots for lost wallets, rings, and bags. Check with store managers and parking attendants first, then file a report to reach the Sheriff's office.
Blackhawk Sports Complex & Parks
The sports complex near the Police station, plus parks and recreation trails throughout Blackhawk, see lost items from families and outdoor enthusiasts. Danville Parks & Rec handles lost & found for these facilities.
Residential Streets & Community Pathways
With many tree-lined streets and private pathways, items are sometimes found by neighbors and reported to local community groups or left with the HOA office.
Danville Adjacent (La Gonda Way, Camino Tassajara)
Blackhawk borders Danville, so items lost while traveling between towns sometimes end up with Danville animal control or the Danville Police Department.
Where Blackhawk residents post found items
Your neighbors are your eyes and ears
Local neighbors post lost and found items daily
Active community members share found pets and items
HOA members alert each other to found items and lost pets
Local subreddit for Danville and Blackhawk posts
Questions about losing and finding things in Blackhawk
How long will the Sheriff's office hold a lost item I report?
Most police departments hold found items for 30 to 90 days before disposal. Once you report with us, we make sure the report stays active and searchable far longer than that, so you're covered even if processing takes time.
My pet is missing. Who do I contact first?
Contact Danville Animal Services immediately at 925-314-3450 and give them a detailed description. They'll check shelters and spread the word. Filing a ReportLost priority pet report gets the alert to animal control and your neighborhood simultaneously.
I lost something at a Blackhawk park. Where is the lost & found?
Items found at Blackhawk parks and facilities (Sports Complex, playgrounds) are typically logged by Danville Parks & Recreation. Call 925-314-3450 to describe what you lost and check if it's been turned in.
How do I report a lost item to Contra Costa Sheriff in Blackhawk?
You can call the non-emergency dispatch line at 925-646-2441 or visit the Blackhawk Police station at 1092 Eagle Nest Place. ReportLost generates the exact details to include and routes your report there for you.
What if my lost item shows up on Nextdoor or a Facebook group weeks later?
Our system monitors for matches across community channels throughout your search period. When a credible match appears, you'll get an alert so you can claim it, even months after your initial report.
Is ReportLost.org official, or does it replace the police?
ReportLost is an independent service, not affiliated with law enforcement. We complement official channels by alerting the right departments and community platforms on your behalf and keeping your case active longer than you could manage alone. You're still in control, and your report always routes to the real authorities.
Lost & found in nearby cities
Don't let your lost item fade away
The first hours matter, but so does persistence. Once you report with ReportLost, your case doesn't go dormant. It keeps searching for a match across the Sheriff's office, parks departments, community groups, and local posts for months, while you move forward.
Start my report →ReportLost.org is an independent service and is not affiliated with Contra Costa Sheriff, Danville Animal Services, the Town of Danville, Blackhawk HOA, or any other local government or private entity. We route reports to these official channels and community platforms on your behalf, but do not represent them. Always contact local law enforcement or animal control directly for emergencies.