Online Crime Reporting

Welcome to the San Mateo County Sheriff’s Office Online Reporting System. This will allow you to submit certain types of crime reports electronically and print out a copy for free. In order to file an online report, you must confirm the following:

  • If this is an emergency, please do not file an online report- please call 911.
  • If the incident occurred outside San Mateo County Sheriff’s Office jurisdiction, please contact the appropriate agency. Our jurisdiction includes the following areas:
    • Unincorporated San Mateo County
    • The Town of Woodside
    • The Town of Portola Valley
    • City of San Carlos
    • City of Half Moon Bay
    • City of Millbrae
    • The San Mateo County Transit District
  • If you have suspect information, please call the San Mateo County Sheriff’s Office at (650) 363-4911.
  • If this occurred on a state freeway or highway, please contact California Highway Patrol.

In order to file an online report, please make sure you turn off your pop-up blocking software. You can do this from the “Tools” section in your internet preferences.

Please Note:

  • All cases filed using this system will be reviewed by San Mateo County Sheriff’s Office staff.
  • Upon review, if further investigation or clarification of your case is needed we will contact you.



You can file the following types of reports online:
  • Abandoned Vehicles
  • Harassing Phone Calls
  • Lost Property
  • Mail Theft
  • Tampering with a Vehicle
  • Theft (theft of electric or motorized bikes and scooters must be filed in person)
  • Theft from an Unlocked Vehicle
  • Vacation House Watch Requests
  • Vandalism
  • Bicycle Complaints (Bicycle complaints can only be accepted for Woodside, Portola Valley, San Carlos, Half Moon Bay, and Millbrae)

Click here to Begin Report