Lose something in Castle Rock? Here are the offices that take your report.
One report reaches the Castle Rock Police Department, Douglas County Sheriff's Office, local transit systems, and active community channels. We monitor the web continuously to match your item with found posts across all local platforms.
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
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 Castle Rock
You file your report
Tell us what you lost, where, and when. We generate the exact details needed for every relevant channel in Castle Rock.
We route it to the right places
Your report goes straight to Castle Rock Police, Douglas County Sheriff's Office, and the appropriate local services. No juggling phone calls or multiple forms.
Automated monitoring finds matches
Our system scans Facebook groups, local marketplaces, community posts, and public lost-and-found channels continuously. When a credible match appears, we alert you instantly. You don't have to check back daily.
Where to report a lost item in Castle Rock
Each channel below handles certain items and locations. ReportLost notifies them all at once and watches for matches while you wait.
Castle Rock Police Department
Items lost in town or found by local police go into their property and evidence system. They hold items and post basic descriptions. We tell you which precinct covers your loss location and generate the exact report to file.
Douglas County Sheriff's Office
If your loss occurred in unincorporated Douglas County or near the county line, the Sheriff handles the report. Their records are separate from Castle Rock PD. We identify which jurisdiction applies to your situation.
RTD and Regional Transit
Lost something on a Denver metro bus or train? RTD has a dedicated lost and found desk and online reporting. We connect you to the exact form and follow up with them on your timeline.
Denver International Airport
If you left an item at DEN (near Castle Rock's main transit hub), their lost and found is in Terminal Level 1 East. Items are held and searchable online. We know exactly what info to include in your report.
Shops, Restaurants & Public Venues
Lost your item at a local business, parking lot, or park? We collect the correct contact details and generate a detailed request. We also monitor local social channels and community posts where items are often posted before reaching official channels.
Lost Pet
If you've lost a dog, cat, or other animal in Castle Rock, the response is urgent and different. The Humane Colorado Buddy Center, Douglas County Animal Services, and active local pet groups are your lifelines. File a priority lost pet report to activate animal-specific searches and alerts.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
The sooner you report, the sooner we search
Filing your report takes five minutes. From there, ReportLost notifies all the right places in Castle Rock and begins continuous monitoring. Every day your item goes unreported is a day fewer people are looking.
Report my lost item →Castle Rock sits at a crossroads between town services, county resources, and Denver connections. Losing something here means contacting multiple agencies separately, tracking down the right numbers, and refreshing your browser every morning hoping someone posts your item in one of the local groups. That's exhausting, and most items slip through the cracks because no single entity monitors all channels at once.
ReportLost simplifies everything with one submission that reaches Castle Rock Police, the Douglas County Sheriff's Office, regional transit if needed, and active local social channels. Once you file, our automated system takes over, searching the web 24/7 for found posts matching your description, location, and timeline. You can breathe. Your item is being looked for.
Common places where items go missing in Castle Rock
These neighborhoods and landmarks have active lost-and-found activity. We search all of them.
Downtown / Wilcox Street Corridor
The heart of town, including Town Hall, local shops, and the main transit hub. High foot traffic and business areas.
Perry Street / Castle Rock Police Area
Near police headquarters and city services. Items found in this district are logged by local officers.
Castleton Court / Humane Colorado
Home to the Buddy Center and local animal services. If your pet is lost here, this is the first place they're reported.
Parks and Recreation Areas
Open spaces, trails, and community parks where items are often left behind. Locals post discoveries in community groups.
Retail and Highway Corridors
Shopping centers and businesses along major routes. Parking lots and store entrances are common loss points.
Community channels where found items are posted
Castle Rock residents actively share found items on these platforms. We monitor them all for you.
Community group for local news and found items
Dedicated pet group with active members
Local subreddit where residents post found items and ask for help
Neighborhood app where lost and found items are frequently shared
Items are sometimes listed here by finders hoping to reconnect
Questions about losing and finding items in Castle Rock
How long does Castle Rock Police hold lost property?
The Castle Rock Police Department holds items in their property and evidence system and keeps records of items turned in. Contact the Property and Evidence Technician at 303-660-7558 to verify if your item has been found and logged.
What if I lost something on an RTD bus or train?
RTD's Lost and Found desk holds items for a period before disposal. Call 303-299-6000 (Option 3) or file a report online at rtd-denver.com. ReportLost coordinates with RTD and monitors their updates continuously.
Do I need to file a police report for a lost item?
In most cases, a lost item (not stolen) doesn't require a formal police report, but it can be registered in the lost property system. ReportLost handles the paperwork and submission for you. If you believe your item was stolen, contact Castle Rock Police non-emergency at 303-663-6100.
Which agency covers my loss, Castle Rock Police or Douglas County Sheriff?
If your loss occurred within Castle Rock town limits, report to Castle Rock Police. If it was in unincorporated Douglas County, contact the Sheriff's Office. ReportLost identifies the correct jurisdiction based on your location and files with both if needed.
How often does ReportLost check for matches?
Our automated system scans Facebook groups, Nextdoor, local marketplaces, and public channels continuously throughout the day and night. When a credible match appears, you're alerted immediately. You don't have to refresh websites or check back daily.
Is ReportLost.org an official government service?
No. ReportLost is an independent platform that automates the reporting and monitoring process for you. We are not affiliated with Castle Rock Police, Douglas County Sheriff, or any government agency. We route your report to the official channels and supplement their efforts with continuous web monitoring. Official agencies make the final determination on your item.
Lost & found in nearby cities
Take the first step
Your item isn't gone. Every moment counts, and every channel needs your information. File your report now, and let our automated system handle the continuous searching while you live your life.
Start my report →ReportLost.org is an independent service and is not affiliated with Castle Rock Police Department, Douglas County Sheriff's Office, Town of Castle Rock, RTD, Denver International Airport, Humane Colorado, or any other government or commercial entity mentioned. We route your report to official agencies and supplement their efforts with automated monitoring. These agencies and organizations are responsible for holding and returning your property. ReportLost does not store, hold, or retrieve items.