Zonehaven - Evacuation Zones


Danville, Contra Costa County, and many other areas of the Bay Area and California use third-party software Zonehaven to divide communities into evacuation zones. Danville’s zones have been approved by the San Ramon Valley Fire District, Danville Police Department, and the Contra Costa County Office of the Sheriff. The zones are now live via the Zonehaven website at

The evacuation zones are created using factors that include weather, traffic flows, street design, historical disaster data, geography, and more. The zones allow first responders to manage evacuation in the most effective way during an emergency. In the event of an emergency, additional data is fed into the software, such as fire location, wind speeds and direction.  

First responders use the program to guide decision-making around if, when, and where to order evacuations or evacuation warnings. Residents of affected zones are alerted using a variety of means, including the Contra Costa County Community Warning System (CWS), Nixle local alerts, social media such as Twitter and Facebook, and old-fashioned door-to-door warnings. Zonehaven also interfaces with Waze, real-time GPS-guided traffic maps. 

What do residents need to do?

  • Learn Your Zone - Residents can view their zone by entering their address at It is a good idea to bookmark this page so that you can easily refer to it. 
  • Sign up for CWS and Nixle to receive emergency notifications. 

The Contra Costa County Community Warning System or CWS can alert residents and businesses within the county that are impacted by or are in danger of being impacted by an emergency.  To register to receive these important emergency warnings, visit

The Danville Police Department uses Nixle to send local emergency notifications. To sign-up, text your zip code to 888777 or sign-up at  

To discover more ways to stay connected in an emergency, visit

Zonehaven Map of Danville