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
All states and U.S. territories
Maps and coordinates
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 83602 Banks Boise County 208, 986
ID 83604 Bruneau Owyhee County 208, 775, 986
ID 83605 Caldwell Canyon County 208, 986
ID 83606 Caldwell Canyon County 208
ID 83607 Caldwell Canyon County 208, 986
ID 83610 Cambridge Washington County 208, 458, 541, 986
ID 83611 Cascade Valley County 208, 986
ID 83612 Council Adams County 208, 458, 541, 986
ID 83615 Donnelly Valley County 208, 986
ID 83616 Eagle Ada County 208, 986
Page 18 of 33

Geographic Map of Idaho

Postal context

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.