The search result for likely refers to the Zone Improvement Plan (ZIP) Codes used specifically within the state of Idaho (ID) . Idaho ZIP Code Structure

Pinpoint a specific local post office or delivery area. How to Find a ZIP Code in Idaho

Identify the Sectional Center Facility (SCF) , a major mail-sorting hub.

The ZIP Code should always be the very last part of the address line.

Adding the extra four digits can speed up delivery.