U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Idaho County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Idaho County.

County State ZIP Code City Area Codes
Idaho County ID 83522 Cottonwood 208, 458, 541, 986
Idaho County ID 83525 Elk City 208, 986
Idaho County ID 83526 Ferdinand 208, 986
Idaho County ID 83530 Grangeville 208, 986
Idaho County ID 83531 Fenn 208
Idaho County ID 83533 Greencreek 208, 986
Idaho County ID 83536 Kamiah 208, 986
Idaho County ID 83539 Kooskia 208, 406, 986
Idaho County ID 83542 Lucile 208, 986
Idaho County ID 83547 Pollock 208, 986
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.