Telephone Emergency Notification System (TENS)




New Emergency Notification System Upgrade

If you live, work or go to school in Marin County and are 18 and over, you may now register your cell phone or VoIP (voice over internet protocol) phone to receive emergency alerts sent by call, text, or email from the County of Marin.

Listed and unlisted/blocked Marin County landline phone numbers are already included in our emergency notification system. Cell phone and VoIP numbers are not included and will require your registration in our Self-Registration Portal.

Register Multiple Marin Locations

Perhaps you live in Marin, but work outside the County. Or you work and go to school in Marin, but live outside the County.  Each geographic location in Marin you choose requires registration with a unique identifying email address. You may register up to two cellphone numbers and one VoIP number per geographic location.

Be Sure You are Registered to Get the Emergency Call, Text & Email

Emergency officials use the Telephone Emergency Notification System (TENS) to deliver incident-specific information or potentially life-saving instruction to the precise geographic area(s) affected. Emergency situations may include:


To register for any city/area listed below, please read our FAQ and then click here:

Corte Madera
Mill Valley


San Anselmo
San Rafael
Unincorporated Areas


Questions? See our Frequently Asked Questions (FAQs).

For more information, email

Use our PDF Poster to help us spread the word.


Watch our YouTube video