Bike Registration & Theft Prevention

Register with Bike Index

Registering your bike increases your chances of getting it back! We have Bike Index stickers with QR codes that you can place on your bike and link to your Bike Index listing, making it even easier for someone who finds your bike to notify you.


  • Know your bike’s serial number.  Learn how to locate your number here.
  • Use a U-Lock Be aware that a lock with a key is better than a lock with a combination. Cable locks are bad because they are easily cut. Quality counts! Expect to spend more than $35 on a good lock.
  • Know how to lock up your bike. A nice guy named Hal shows you how here.
  • Keep the receipt from your bike purchase in a safe place.
  • Take photographs of your bike. You can use these if your bike ever goes missing. Take a close up of the serial number too.
  • Tweet @isitstolen. Don’t want to accidentally buy a stolen bike? Tweet the serial number to @isitstolen to see if it has been reported as stolen.

If your bike is stolen…

Call and report it to the police.  It is very important to make an official report. If law enforcement notices an increase in bike theft they will take action. No report, no action. You do not need your serial number to make a report.

  • Cloverdale Police Call 894-3150
  • Cotati Police Call 792-4611
  • Healdsburg Police Call 431-3377
  • Petaluma Police Call 778-4370
  • Rohnert Park Police Call 584-2600
  • Santa Rosa Police Call 528-5222
  • Santa Rosa Junior College Police 527-1000
  • Sebastopol Police Call 829-4400
  • Sonoma Police Call 996-3602
  • Windsor Police Call 838-1234
  • Sonoma County Sherif Call 565-2511

Report it stolen in Bike Index

Contact your insurance. Bicycles are often covered under your homeowners or renters insurance. If you used a credit card you might even be covered there too.

Set up Google Alerts to send your emails when Craigslist ads matching your search queries pop up.

Post your bike to Sonoma County Bike Watch Facebook group.