Marin County CA SO

Transparency Portal

Last Updated: Thu Dec 04 2025
Overview
Marin County County Sheriff's Office uses Flock Safety technology to capture objective evidence without compromising on individual privacy. Marin County County Sheriff's Office utilizes retroactive search to solve crimes after they've occurred. Additionally, Marin County County Sheriff's Office utilizes real time alerting of hotlist vehicles to capture wanted criminals. In an effort to ensure proper usage and guardrails are in place, they have made the below policies and usage statistics available to the public.
Policies
What's Detected
License Plates, Vehicles
What's Not Detected
Facial recognition, People, Gender, Race
Acceptable Use Policy
Data is used for law enforcement purposes only. Data is owned by Marin County County Sheriff's Office and is never sold to 3rd parties.
Prohibited Uses
Immigration enforcement, traffic enforcement, harassment or intimidation, usage based solely on a protected class (i.e. race, sex, religion), Personal use.
Access Policy
All system access requires a valid reason and is stored indefinitely.
Hotlist Policy
Hotlist hits are required to be human verified prior to action.
Usage
Data retention (in days)
30 days
Number of LPR and other cameras
31
Organizations granted access to Marin County CA SO data
Benicia CA PD, California Highway Patrol, Central Marin CA PD, Citrus Heights CA PD, Delano CA PD, El Cajon CA PD, Hayward CA PD, Manteca CA PD, Mill Valley CA PD, Novato CA PD, Palo Alto CA PD, San Luis Obispo CA PD , San Rafael CA PD, Sausalito CA PD, Solano County CA SO, Tehachapi CA PD, Tiburon CA PD, Williams CA PD
Hotlists Alerted On
California SVS, NCMEC Amber Alert
Vehicles detected in the last 30 days
433,085
Hotlist hits in the last 30 days
1,213
Searches in the last 30 days
245
Additional Info
Marin County Sheriff's Office Policy
https://www.marinsheriff.org/assets/downloads/GO-05-06-Policy-429.pdf
Additional Info