Haverhill IA ZIP Code
Haverhill city is located in Iowa State, Marshall County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Haverhill IA zip code by its streets and block numbers if we have some of the Haverhill streets loaded in our website
Haverhill Area Code is 641 and Time Zone is Central (GMT -06:00).
Haverhill Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Haverhill City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Haverhill ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Haverhill, Iowa.
The Haverhill Zip Code is 50120.
If you want to send a mail to Haverhill City, you should use the 50120 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Haverhill 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 50120 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Haverhill 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 Iowa.