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.

42,735 verified records
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State directory

Idaho ZIP Codes

Complete postal directory, details, and geographic map for the State of Idaho.

State ZIP Code City County Area Codes
ID 83311 Albion Cassia County 208, 986
ID 83312 Almo Cassia County 208, 435, 986
ID 83313 Bellevue Blaine County 208, 986
ID 83314 Bliss Gooding County 208, 986
ID 83316 Buhl Twin Falls County 208, 986
ID 83318 Burley Cassia County 208, 986
ID 83320 Carey Blaine County 208, 986
ID 83321 Castleford Twin Falls County 208, 986
ID 83322 Corral Camas County 208, 986
ID 83323 Declo Cassia County 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.