Watertown, MA ZIP Codes
Watertown, Massachusetts has 3 ZIP codes: for street addresses, for PO boxes and for a single organization.
Mail addressed to Watertown covers nearby places too.
Where the 02472 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
02471 and 02477 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Watertown city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Watertown
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?
Watertown PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 02471 | PO boxes at the New Town post office New Town |
| 02472 | street delivery Watertown Annex |
| 02477 | one organization Watertown Annex |
Why your mail may say Watertown when you live outside it
Watertown ZIP codes also cover Watertown Town, so a letter addressed to Watertown can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Middlesex County property records show which city you are in.
Watertown ZIP code questions
What is the main ZIP code for Watertown?
02472, the ZIP code of the main Watertown Annex post office at 170 High St.
Which Watertown ZIP codes are for PO boxes only?
02471. Mail to it goes to boxes at the post office, not to street addresses.
What county is Watertown in?
Middlesex County.
ZIP codes for towns near Watertown
More towns near Watertown: Medford, Lexington, Everett, Needham, Wellesley, Malden, Chelsea, Woburn, Boston.
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