Chelmsford MA ZIP Code
Chelmsford 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 Chelmsford MA zip code by its streets and block numbers if we have some of the Chelmsford streets loaded in our website
Chelmsford Area Code is 978/781 and Time Zone is Eastern (GMT -05:00).
Chelmsford Zip Code - Massachusetts
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Chelmsford City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Chelmsford ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Chelmsford, Massachusetts.
The Chelmsford Zip Code is 01824.
If you want to send a mail to Chelmsford City, you should use the 01824 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Chelmsford 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 01824 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Chelmsford 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.