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 ZIP Codes

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

State ZIP Code City County Area Codes
ID 83631 Idaho City Boise County 208, 986
ID 83632 Indian Valley Adams County 208, 986
ID 83633 King Hill Elmore County 208, 986
ID 83634 Kuna Ada County 208, 986
ID 83635 Lake Fork Valley County 208
ID 83636 Letha Gem County 208, 986
ID 83637 Lowman Boise County 208, 986
ID 83638 Mccall Valley County 208, 986
ID 83639 Marsing Owyhee County 208, 458, 541, 986
ID 83641 Melba Canyon 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.