Grantham NH ZIP Code
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Grantham city is located in New Hampshire State, Sullivan County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Grantham NH zip code by its streets and block numbers if we have some of the Grantham streets loaded in our website
Grantham Area Code is 603 and Time Zone is Eastern (GMT -05:00).
Grantham Zip Code - New Hampshire
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Grantham City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Grantham ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Grantham, New Hampshire.
The Grantham Zip Code is 03753.
If you want to send a mail to Grantham City, you should use the 03753 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Grantham 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 03753 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Grantham 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 New Hampshire.