Lost your wallet, ring, or beloved pet in Thief River Falls? Let us handle the reporting.
One report sent to the Thief River Falls Police Department, Pennington County Sheriff, T.H.E. Bus, Pennington County Humane Society, and local community 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
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 it works
You submit your details
Tell us what you lost, where, and when. We gather the exact info needed for local law enforcement and community networks.
We route it to the right places
Your report goes straight to the Thief River Falls Police Department, the Sheriff's office, transit lost & found, animal shelters if applicable, and active local social groups who help reunite people with their belongings.
Your report keeps searching for you
For your entire search period, your report stays on file and actively matches against new found items, posts, and community alerts, so you don't have to refresh pages every day.
Where to report and what to do
The key local resources, plus how ReportLost handles the coordination for you.
Thief River Falls Police Department
The main point of contact for lost and found reports in town. Officers can file a report and check what's been turned in at the station. We identify which department covers your exact location and prepare your report details so the intake process is faster.
Pennington County Sheriff's Office
Handles lost and found for the broader county area. If you lost your item outside the city limits, the Sheriff's office is your backup channel. We make sure both city and county law enforcement are aware of your report.
T.H.E. Bus Lost & Found
Items lost on Tri-Valley Heartland Express buses are collected at the transit office. We send your report directly to T.H.E. Bus dispatch so drivers and staff are alerted to watch for your wallet, phone, or bag.
Thief River Falls Regional Airport
Lost something at the terminal or during check-in? The airport's FBO and operations team maintain a lost and found. We notify the airport with your description so staff can flag matching items.
Pennington County Humane Society
If you've lost your cat, dog, or other pet, the Humane Society shelters and rescues animals from the area and reunites them with owners. They work closely with local law enforcement. File a priority lost pet report to speed up shelter coordination.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
The sooner you report, the sooner we start searching.
Once your report is filed, the work begins. Every day counts in the first week, but a detailed, properly routed report can recover items weeks or months later. That's why getting the details right from the start, and keeping the search active across all channels, makes all the difference.
Report my lost item →Losing something in Thief River Falls means contacting multiple places: the police station on First Street West, the transit office on Barzan Avenue, the humane society on Highway 59 if it's a pet, local community groups scattered across Facebook. Each has its own process, timelines, and contact details. Without a central report, your lost item sits in separate systems, and chances slip away.
ReportLost simplifies all of that. Submit once, and we immediately notify the people and agencies most likely to help, generate the right information for each channel, and keep your report active and matching throughout the full 6 to 12 month search window. You can take a breath once you file; we make sure no avenue goes unchecked.
Neighborhoods and high-traffic areas in Thief River Falls
Common places where items turn up.
Downtown & Main Avenue
Shops, restaurants, and city offices cluster here. Wallets and phones lost during errands often end up at nearby registers or swept into local business lost & founds.
T.H.E. Bus Transit Hub
The main transit station on Barzan Avenue is a frequent source of lost items on buses and at the station itself. Bags, phones, and personal items are commonly left aboard.
Thief River Falls Regional Airport
Travelers often lose phones, wallets, and luggage during the rush of boarding or baggage claim. The FBO office and ticket counter handle airport lost & founds.
City Parks & Recreational Areas
Walkers and families sometimes misplace items along trails, at playgrounds, or during picnics. Local parks report lost rings, glasses, and keys regularly.
Business District & Shopping Centers
Retail stores, gas stations, and local shops collect wallets, phones, and small items at customer service counters throughout the week.
Community networks that help
Where locals post and share found items.
Active Facebook group dedicated to reuniting lost and found animals with owners.
Community Facebook group with emergency contact numbers for pet tips and sightings.
Official city page sometimes features lost and found posts and community announcements.
Regional subreddit where locals share lost item alerts and search tips.
Frequently asked questions
How long does the police department hold lost and found items?
The Thief River Falls Police Department typically holds items for 30 to 90 days before releasing or donating them. That's why reporting quickly and checking back within the first week is critical. Your ReportLost report stays active the entire time, increasing the chance of a match.
What if I lost something on a T.H.E. Bus?
Call the T.H.E. Bus office at 218-681-6760 and describe your item. Drivers check buses daily, and items are held at the dispatch office. We route your report to T.H.E. Bus dispatch so staff are actively looking for your description.
What should I do if I lost my pet?
Call the Pennington County Humane Society immediately at the number on their website, and contact the police non-emergency line. Post in local lost pet Facebook groups. We coordinate all of this for you and file a priority pet report to expedite shelter alerts.
Can I search the airport lost and found online?
The Thief River Falls Regional Airport lost and found is handled by the FBO office. You'll need to call 218-681-5585 to ask about items. We ensure the airport is notified of your report so items are flagged upon intake.
How long will my ReportLost report stay active?
Your report remains active for either 12 months, depending on your choice. During that entire period, we keep matching your description against new found items, community posts, and updates from local agencies, so you don't have to check manually every day.
Is ReportLost.org an official service, or does it replace contacting the police?
ReportLost is an independent service that coordinates reporting on your behalf; it does not replace the police, but accelerates the process and keeps your case active across multiple channels simultaneously. You remain the owner of your report and can contact any agency directly anytime.
Lost & found in nearby cities
File your report today.
The longer you wait, the more channels and time windows slip by. Your first step is simple: tell us what you lost and where. We handle the routing, the coordination, and the months-long follow-up.
Start my report →ReportLost.org is an independent service not affiliated with the Thief River Falls Police Department, Pennington County Sheriff's Office, T.H.E. Bus, Thief River Falls Regional Airport, Pennington County Humane Society, or the City of Thief River Falls. We coordinate and route your report to these agencies; we do not represent them. Always verify contact information and hours directly with local services.