Watertown MA ZIP Code
Watertown city is located in Massachusetts State, Middlesex County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Watertown MA zip code by its streets and block numbers if we have some of the Watertown streets loaded in our website
Watertown Area Code is 617/857 and Time Zone is Eastern (GMT -05:00).
Watertown Zip Code - Massachusetts
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Watertown City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Watertown ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Watertown, Massachusetts.
The Watertown Zip Code is 02471, 02472, 02477.
If you want to send a mail to Watertown City, you should use the 02471, 02472, 02477 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Watertown ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 02471, 02472, 02477 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Watertown city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Massachusetts.