Citizen Observer Offers Public Safety Alerts via Email, Text


Cambridge residents have the opportunity to register with Citizen Observer, an innovative service being used across the country to send important messages to residents via text message and/or email. This allows citizens to be alerted and informed of important events in real-time so that they may act accordingly.

The Cambridge Police Department has been utilizing this system since late 2008 to send out community alerts, information on citizen safety, department sponsored meetings and news updates relative to the department.
In an effort to increase citizen awareness and improve communication with members of the Cambridge community, the Cambridge Police Department is renewing its efforts to have as many citizens register with the Citizen Observer as possible. Doing so allows citizens to be informed and receive information and communications directly from the Cambridge Police Department about important and noteworthy events and incidents.

To register for Citizen Observer, please visit From here, citizens may simply follow the quick and simple instructions to complete their registration where they will have a choice to receive notices relevant to only their specified neighborhood or to the City of Cambridge at large.  Please remember that if you choose to receive text message alerts from the Cambridge Police Department, standard message rates from your service provider will apply.

If you have questions about the Citizen Observer or need help registering, please contact the Cambridge Police Public Information Office at 617-349-3237, or the Crime Analysis Unit at 617-349-3390.

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Visiting City Hall

Cambridge City Hall

795 Massachusetts Ave
Cambridge MA, 02139
Ph: 617-349-4000
TTY: 617-349-4242

Hours of Service

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

Richard C. Rossi
City Manager

Lisa C. Peterson
Deputy City Manager