Cambridge Postal Advisory Council

The United States Postal Service established the Cambridge Postal Advisory Council (CPAC) in 1991 to serve as a community resource in terms of offering the customers’ perspective on the nature and quality of mail delivery service and other postal services in the City of Cambridge.

CPAC’s primary goal is to monitor customer trends and field any complaints that may arise. In addition to serving as a vehicle for customer complaints, CPAC serves as a venue to assist the Post Office in the development and implementation of new programs.

More Information

Contact Info

For Information, assistance, or to file a complaint, contact:

Cambridge Postal Advisory Council
770 Massachusetts Avenue, Cambridge, MA 02139
Telephone: 617.575.8738
TTY: 617.349.6112
Fax: 617.349.6148

Post Office Information

All telephone inquiries go to the USPS Call Center:
1-800-ASK-USPS or 1-800-275-8777

Any questions that require local intervention from the appropriate branch manager listed below can be redirected by the call center for you or you will be told that the local postal official will call you back.

You may also find the information you need on-line at

Cambridge Postmaster

Michael Sullivan
770 Massachusetts Avenue
Cambridge MA 02139-9998

Main Office

Central Square 

770 Massachusetts Avenue
Cambridge MA 02139-9998

Hours of Operation

Mon-Fri 7:30 a.m. - 7:00 p.m.
Sat 7:30 a.m. - 2:00 p.m.

Branch Postal Stations

Harvard Square

125 Mt Auburn Street
Cambridge MA 02238-9998

Hours of Operation

Mon - Fri 7:30 a.m. - 6:00 p.m.
*24 Hour Lobby Access to Automatic Postal Center*

Kendall Square

250 Main Street
Cambridge MA 02142-9998

Hours of Operation

Mon-Fri 8:0 0 a.m. -5:00 p.m.
24 Hour Lobby Access to Automatic Postal Center

MIT Station

84 Massachusetts Avenue
Cambridge MA 02139-9992

Hours of Operation

Mon-Fri 7:30 a.m.-5:00 p.m.

Porter Square

1953 Massachusetts Avenue
Cambridge MA 02140-9998

Hours of Operation

Mon-Fri 7:30 a.m. - 5:30 p.m.
Sat 7:30 a.m. - 2:00 p.m.

Inman Square

1309 Cambridge Street
Cambridge MA 02139-9991

Hours of Operation

Mon-Fri 10 a.m.-5:00 p.m.

East Cambridge

303 Cambridge Street
Cambridge MA -2141-9998

Hours of Operation

Mon-Fri 8:00 a.m.-5:00 p.m.

Adopt-a-Box Program


The Postmaster of Cambridge, Michael Sullivan, Cambridge Postal Advisory Council and the Cambridge Consumers’ Council would like to invite you to participate in our Adopt-A-Box program, part of our continued effort to help beautify our Cambridge neighborhoods and do what we do best—Deliver for you!

About the Adopt-A-Box Program

As a voluntary "Adopter," you would help the Cambridge Post Office identify any repair issues with our blue "collection" boxes and green "relay" boxes, many of which sit directly in front of your home or business. If you notice that your adopted box has been vandalized or needs to be tended to by maintenance staff, we ask that you contact our program staff so we can take the appropriate action. Those interested in adopting a box should fill out an application. You can also contact the program coordinator to request an application.

Adopter Responsibilities

Adopters are responsible for notifying the Program Coordinator of any acts of vandalism or possible repair problems. Typical repair issues to monitor your box for include:

  • Damaged or unsecured boxes
  • Graffiti Faded and torn collection stickers
  • Rust Faded or chipped paint

Application Review and Notification

Applications will be reviewed in the order they are received. Only completed applications will be considered. If you are submitting one application, but would like to adopt more than one box, please make sure your application reflects such. Once your application is processed, you will receive additional program information by mail. All applications should be processed within two weeks of submission.

Submission of Application

Please return completed applications and direct all questions concerning the program/application procedure to: 

Adopt-A-Box Program Coordinator
Cambridge Consumers’ Council
831 Massachusetts Avenue
Cambridge, MA 02139

Phone: (617) 349-6150
Fax: (617) 349-6148

Carrier Alert Program

The Carrier Alert Program is intended to assist the elderly (65 and older) who live in Cambridge. The Program is free, and it offers home bound adults an extra measure of personal security. It works by cooperation between the United States Postal Service and the Cambridge Council on Aging.

To join the program you will have to fill out an application form. You provide names of the family members or friends to be contacted in case of an emergency. The Cambridge Council on Aging keeps this information confidential and uses it only if there is an emergency. Your letter carrier will make sure you pick up your mail from your mailbox. If the mail stars to accumulate, the Letter Carrier will contact the Council on Aging. The Council on Aging will then get in touch with your contacts to see if assistance is needed.

To obtain an application form and more information, please call the Council on Aging at 617-349-6055, Someone will be able to discuss the Carrier alert Program with you to see if it is right for your and then send you an application form. Once you are enrolled in the program the Postal Service will be notified.

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