Somerville, MA ZIP Codes
Somerville, Massachusetts has 3 ZIP codes: 3 for street addresses (, and ).
Your street decides which one you use.
Which Somerville ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Somerville ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Somerville city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Somerville ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 02143 | street delivery Chelsea Carrier Annex |
| 02144 | street delivery West Somerville |
| 02145 | street delivery Winter Hill |
ZIP codes from nearby towns that reach into Somerville
- 02155, mailing town Medford, covers 2 percent of Somerville
Why your mail may say Somerville when you live outside it
A letter addressed to Somerville can go to a home outside the city limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Somerville use 02155, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Middlesex County property records show which city you are in.
Somerville ZIP code questions
What is the main ZIP code for Somerville?
02143, the ZIP code of the main Chelsea Carrier Annex post office at 307 Beacham St.
What county is Somerville in?
Middlesex County.
ZIP codes for towns near Somerville
More towns near Somerville: Watertown, Brookline, Boston, Revere, Newton, Waltham, Woburn, Lexington, Lynn.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections