Castleford ID ZIP Code
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Castleford city is located in Idaho State, Twin Falls County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Castleford ID zip code by its streets and block numbers if we have some of the Castleford streets loaded in our website
Castleford Area Code is 208 and Time Zone is Mountain (GMT -07:00).
Castleford Zip Code - Idaho
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Castleford City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Castleford ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Castleford, Idaho.
The Castleford Zip Code is 83321.
If you want to send a mail to Castleford City, you should use the 83321 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Castleford 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 83321 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Castleford 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 Idaho.