Lost something in Arnold? Report it and we'll route it to the right people.
One report reaches the Arnold Police Department, the Arnold Animal Control, local lost pet groups, and transit services. 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
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 Arnold
You Report the Loss
Tell us what you lost, where, and when. We gather the details we need to route your report to the right channels right away, whether that's the police, animal control, or lost pet networks in the Arnold area.
We Route It to the Right Places
Your report goes directly to Arnold Police, Animal Control, local transit lost and found offices, and relevant community groups. No need for you to call multiple places and repeat your story.
Your Report Keeps Searching for You
For your entire search period, your report stays active and continues to match against new found items, social posts, and marketplace listings. When a credible match appears, you'll get an alert, so you don't have to check every day yourself.
Where to Report and What ReportLost Does
Arnold has several places to report a loss. Here's what you need to know, and how we help you reach them.
Arnold Police Department
The Arnold Police handle lost item reports and can log your report in their system. For non-emergency reports, call the non-emergency line. We prepare the details you'll need and tell you which desk to contact.
Animal Control & Lost Pets
If you've lost a cat or dog, Arnold Animal Control is your first stop. They maintain lost pet records and work with local shelters and rescue networks. We ensure your pet description reaches them and all connected groups. File a priority lost pet report
JeffCo Express Bus Service
Lost something on the bus? JeffCo Express (the local transit service) has a lost and found. We point you to the right contact and generate a clear description to help them identify your item faster.
St. Louis Lambert International Airport
If your loss happened during air travel, St. Louis Lambert's lost and found is where to start. They hold items for a set period. We help you report with the specifics they need and connect you with the right department.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
Start Your Report Today
The sooner you report, the sooner we can route your information and get your item into the search cycle. Once your report is filed, you can relax knowing it's working for you.
Report my lost item →Losing something in Arnold means making the rounds: the police station on Jeffco Boulevard, animal control if it's a pet, possibly the local bus service, and then hoping someone posts on a Facebook group or Nextdoor. Each call is a repeat conversation, and once you've reported, you're left to search on your own. That's exhausting and rarely gets results fast.
ReportLost simplifies all of that. One submission, and we connect you to the Arnold Police Department, Animal Control, JeffCo Express bus service, local lost pet networks, and community channels. The real difference: your report doesn't go quiet after you hang up. It stays active, automatically searching for matches across lost item posts and alerts for 12 months, so you can move forward knowing your item is still being looked for.
Common Places People Lose Things in Arnold
Whether it's on the street, at a local business, or on the bus, knowing where to focus your search helps.
Downtown Arnold & Jeffco Boulevard
The heart of Arnold, with shops, restaurants, and city offices. Items are often turned in to local businesses or the police station nearby.
Arnold Parks & Recreation Areas
Green spaces around the city are common spots for wallets, phones, and pet losses. Animal control and community groups monitor these zones.
JeffCo Express Bus Routes
Public transit is a frequent place to leave bags, phones, and personal items. The bus service maintains a lost and found at their dispatch office.
Local Retail & Shopping Centers
Parking lots and storefronts are where many items go missing. Staff often keep found items for a limited time before disposal.
Local Community Groups Helping in Arnold
These groups are active in reporting and reuniting lost items and pets with their owners.
Facebook group dedicated to reuniting lost and found pets across the county, including Arnold
Active community group for pet losses and sightings in the Arnold area
The city's official Facebook page, where community alerts and lost item posts are shared
Hyperlocal network where neighbors post about lost items and pets in real time
Frequently Asked Questions
How long does Arnold Police keep lost items?
Most police departments hold unclaimed items for 30 to 90 days before disposal or donation. Check with Arnold Police (636-296-3204) about your specific item. The sooner you report, the better your chances of recovery within that window.
What if I lost my pet in Arnold?
Contact Arnold Animal Control immediately at 636-282-2387. They maintain lost pet records and work with local rescue groups. Post on Jefferson County lost pet Facebook groups and PawBoost right away. We can help you file a coordinated report across all these channels.
Where do I claim a lost item in Arnold?
If it's been found and turned in, you'll typically claim it at the Arnold Police Department (2101 Jeffco Blvd). If it was on the bus, contact JeffCo Express dispatch. If at the airport, call St. Louis Lambert's lost and found. We tell you exactly which desk and what to bring.
How long does ReportLost keep searching after I file a report?
Your report stays active for your chosen search period, either 12 months. During that time, it automatically matches against new found items, social media posts, and community alerts. You'll receive an alert if a credible match appears, so you're not spending months checking yourself.
Can ReportLost help if I lost something at the airport?
Yes. We'll file your report and route it to St. Louis Lambert's lost and found system, plus local police and community channels. Your report then stays active in case your item is recovered later or posted on a marketplace.
Is ReportLost official, or does it replace the police?
ReportLost is an independent service. We don't replace the police or animal control, we coordinate with them. When you file with us, we ensure your report reaches the official channels (Arnold Police, Animal Control, transit) where your item should legally be reported. We also keep your report active longer and search broader community channels than you'd do alone.
Lost & found in nearby cities
Don't Search Alone
Filing your report now gets the ball rolling across all the right channels in Arnold. Then let us handle the ongoing search while you focus on other things. Your report stays active and working for you.
Start my report →ReportLost.org is an independent service and is not affiliated with the Arnold Police Department, Arnold Animal Control, JeffCo Express, St. Louis Lambert International Airport, or any other local or government agency. We coordinate on your behalf with these official channels and community networks, but we do not operate them. For urgent matters, contact the Arnold Police Department directly at 636-296-3204 or 636-296-2222.