Mackay ID ZIP Code
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Mackay city is located in Idaho State, Custer County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Mackay ID zip code by its streets and block numbers if we have some of the Mackay streets loaded in our website
Mackay Area Code is 208 and Time Zone is Mountain (GMT -07:00).
Mackay Zip Code - Idaho
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Mackay City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Mackay ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Mackay, Idaho.
The Mackay Zip Code is 83251.
If you want to send a mail to Mackay City, you should use the 83251 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Mackay 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 83251 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mackay 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.