Citizen Observer

Part of the Cambridge Alert Network, Citizen Observer is a service used by the Cambridge Police Department to send e-mail and text alerts about crime and other notifications to the various neighborhoods of the City.  Click here for the Citizen Observer privacy policy/terms and conditions.

Sign up for Citizen Observer here.

Residents are encouraged to sign up to receive notifications for their neighborhood as well as the "CITYWIDE" group.  The groups are as follows:

  • Cambridge PD: CITYWIDE
  • Cambridge PD: East Cambridge
  • Cambridge PD: MIT
  • Cambridge PD: Inman/Harrington
  • Cambridge PD: Area 4
  • Cambridge PD: Cambridgeport
  • Cambridge PD: Mid-Cambridge
  • Cambridge PD: Riverside
  • Cambridge PD: Agassiz
  • Cambridge PD: Peabody 
  • Cambridge PD: West Cambridge
  • Cambridge PD: North Cambridge
  • Cambridge PD: Cambridge Highlands
  • Cambridge PD: Strawberry Hill

Notifications will come in three forms, outlined below:

Citizen Alerts. The most important and timely notification from the police will be labeled as such and sent to the affected neighborhood(s) and the "CITYWIDE" group.  These alerts will typically be sent within 12 hours of the incident during the following scenarios:

  • Threats to Public Safety
  • High Profile Incidents

Advisory.  This type of notification will be primarily used to share important information with the community and will be sent to affected neighborhood(s) and the "CITYWIDE" group if the information affects the entire community.  Typically, these notifications will be sent following the monthly BridgeStat release, and will include information about the following:

  • Significant Incidents and Follow-ups
  • Crime Patterns Identified in BridgeStat

Neighborhood Info. Notifications will be sent to inform individual neighborhoods about neighborhood-specific information that does not apply to the city as a whole, such as:

  • Neighborhood Meetings
  • Other Neighborhood-Specific Announcements

*Citizen Observer also allows people to text anonymous crime tips to the police, helping provide valuable information to investigators and make our community a safer place.

To receive emergency alerts, sign up with CodeRED.  For general city notifications, subscribe to Cambridge E-Line.  


Sign up for Citizen Observer here.


Please email or call 617-349-3237 with questions or for help signing up.


Visiting CPD

Hours of Service

Monday: 8:30am-8pm
Tuesday-Thursday: 8:30am-5pm
Friday: 8:30am-12pm

Cambridge Police Department

Christine Elow
Police Commissioner

Email Us with general inquiries about the department or questions about resources/programs offered by the police. DO NOT use this form to submit tips or report crimes in progress.

125 Sixth Street
Cambridge MA 02142