Caldwell ID ZIP Code
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Caldwell city is located in Idaho State, Canyon County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Caldwell ID zip code by its streets and block numbers if we have some of the Caldwell streets loaded in our website
Caldwell Area Code is 208 and Time Zone is Mountain (GMT -07:00).
Caldwell Zip Code - Idaho
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Caldwell City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Caldwell ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Caldwell, Idaho.
The Caldwell Zip Code is 83605, 83606, 83607.
If you want to send a mail to Caldwell City, you should use the 83605, 83606, 83607 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Caldwell 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 83605, 83606, 83607 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Caldwell 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.